Please or to access all these features

AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to say no to being my step sister's birth partner?

136 replies

WayAhead · 29/08/2026 16:28

I have 2 sisters, a half brother and a step sister.

I was a birth partner for one of my sisters, along with her husband, 10 years ago when she had my nephew and then again when she had my niece 6 years ago.

My step sister is currently pregnant and has asked me to be her birth partner. I have thought about it and I don’t want to. She doesn’t want her partner there and he doesn’t want to be there anyway and she doesn’t feel comfortable asking anyone else. We are not close though and I really can not imagine being in the room when she gives birth.

She is due mid October and I was hoping to go away for half term with my husband and children*, so if I agreed to be her birth partner, that would possibly put an end to those plans.

She hasn’t asked my sister and I’d say we have the same relationship with her, not that I know of my sister would be willing. She has friends. AIBU to say no? I don’t want to hurt her so how do I say no without saying I just don’t feel close enough to her to be her birth partner.

  • Post edited - originally said 'husband and partner' - OP meant to say 'husband and children'
OP posts:
PancakeCloud · 30/08/2026 15:20

AmericanCars · 30/08/2026 15:10

These armchair medical experts. 😅 You can’t possibly know and sound very, very silly.

Yes, OP, you should now pay for a step sister you aren’t close to and haven’t seen for months to have a doula. 😂😂😂😂😂😂 It’s the ‘least’ you could do. 🤣🤣🤣🤣🤣

Some people are funny.

Yes. You definitely need to be a medical professional to know that birth can be a very vulnerable and difficult experience 🤔.

I couldn’t leave a family member to do it alone. If the OP doesn’t want to do it, that’s her prerogative. If it were me, I’d rather expend a grand on a doula than let my sister give birth with no support. 🤷‍♀️ Honestly why is that funny?

thepariscrimefiles · 30/08/2026 15:18

PancakeCloud · 30/08/2026 08:52

But it does sound like mild discomfort (or mild anxiety if you like) vs the scary experience for your stepsister of giving birth with a very limited support system.

You can say no, but I feel really sorry for your stepsister. Could you contribute to a doula to support her instead at least?

It sounds much more than mild anxiety. She describes her own births and her sister's birth as 'traumatic' and she feels traumatised by these experiences.

Why on earth should OP pay for a doula? Her step-sister's useless boyfriend who won't be her birthing partner in case seeing her in labour and giving birth 'puts him off her' should be the one paying for a doula.

AmericanCars · 30/08/2026 15:10

PancakeCloud · 30/08/2026 08:52

But it does sound like mild discomfort (or mild anxiety if you like) vs the scary experience for your stepsister of giving birth with a very limited support system.

You can say no, but I feel really sorry for your stepsister. Could you contribute to a doula to support her instead at least?

These armchair medical experts. 😅 You can’t possibly know and sound very, very silly.

Yes, OP, you should now pay for a step sister you aren’t close to and haven’t seen for months to have a doula. 😂😂😂😂😂😂 It’s the ‘least’ you could do. 🤣🤣🤣🤣🤣

Some people are funny.

WhatNoRaisins · 30/08/2026 13:42

The way I see this is that you can't make everyone an equal priority. I would be prioritising my partner and children over a more distant family member that I wasn't close to and saw infrequently.

ToddlerTime45532 · 30/08/2026 13:04

Nah. If she chose to procreate with a loser and is so bad at relationships that the only person she can ask is a half sister she sees once year, that's totally on her.

It's a huge ask. I wouldn't do it.

ErNo20 · 30/08/2026 11:40

You don't want to, so you won't be.

End.

forthelasttim · 30/08/2026 11:39

I do feel very sad for your step-sister but that doesn't mean you should be her birthing partner.

B9waiting · 30/08/2026 10:00

Agreed @MsPrufrockk

MsPrufrockk · 30/08/2026 09:35

WayAhead · 29/08/2026 22:11

She knows we are not close and it will be awkward. It’s not to do with her wanting to share this with me, it’s just that she doesn’t seem to have anyone else. She can’t possibly feel close to me. We hardly see each other. We last saw each other on New Years Eve. We haven’t had the best relationship in the past and we’ve never had a deep conversation but we are civil as my mum married her dad. She is using me for convenience because I’m a woman who has given birth. She doesn’t want the new bloke there as they are both scared he’ll ’go off her’ if he sees her like that. I find it hard to deal with that level of twattiness.

Twattiness indeed, surely if she's ready to have a baby with this man, she's ready to have him at the birth? My relationship with my son's dad was very new when I unexpectedly got pregnant, but there was never any doubt he'd be at the birth! And if he had said he 'was afraid he'd go off me' because of it - he would have been in the bin straight away.

YANBU, being someone's birthing partner is a very personal thing, and you shouldn't do it if you don't feel 100% committed to it, and to them.

Velvian · 30/08/2026 09:17

Yanbu at all. Would your mum go with her @WayAhead ?

IonianNerveGrip · 30/08/2026 09:05

DexTheDoggo · 30/08/2026 00:37

That sounds like a good message to send OP. Enjoy your holiday.

Yeah, I think this is the best way to go.

It's a delicate situation. I don't think it's necessarily a good thing to have someone who's sucked it up and doesn't want to be there either. Birth support is just so important. It's not really like other favours you might be asked. You can't unselfish your way into the baggage from your own and your sister's births not affecting you.

PancakeCloud · 30/08/2026 08:52

WayAhead · 29/08/2026 17:39

Thanks for dismissing my feelings as mild discomfort. 🤔

I would feel extremely uncomfortable because we are not close. My own births also add to my discomfort. I was there for my sister because I love her and I’m close to her, but have said I was very anxious.

But it does sound like mild discomfort (or mild anxiety if you like) vs the scary experience for your stepsister of giving birth with a very limited support system.

You can say no, but I feel really sorry for your stepsister. Could you contribute to a doula to support her instead at least?

ALovelyPinkUnicorn · 30/08/2026 08:30

thepariscrimefiles · 30/08/2026 07:47

OP has said that she and her step-sister hardly have a relationship at all. They have never been close and her step-sister has never wanted a closer relationship with OP. This request has come totally out of the blue.

The reason why her boyfriend won't be her birthing partner is that they both think that seeing her give birth would 'put him off her'. I genuinely can't even think of a twattier reason for the father of the baby refusing to support the mother during labour and the birth of their baby.

OP obviously still has PTSD from her own difficult birth and she found being her sister's birthing partner extremely traumatising. She, quite understandably, doesn't want to go through this again for her step-sister.

This, it looks like the step sis sees op as a commodity to be used as a tool.
if they were so close, I’d assume she’d have been there at the ops births or after, helping with the dc?
Or am I assuming correctly… your dc would have no idea who she is @WayAhead ?

Bluenotgreen · 30/08/2026 08:11

Just say you can’t as you are going on holiday that week.

WhatNoRaisins · 30/08/2026 07:58

I think that given that you're not close and you'd have to scrap holiday plans with your partner and children to be a birth partner it's too much to ask. I'd say no, you're not able to do this.

thepariscrimefiles · 30/08/2026 07:47

JLou08 · 29/08/2026 23:38

Ooo that's cold. I don't think there's anyway to tell her without hurting her. You obviously mean a lot more to her than she means to you and it is going to hurt her when she finds that out, at one of her most vulnerable times too. I couldn't say no to someone if it would risk them giving birth alone.

OP has said that she and her step-sister hardly have a relationship at all. They have never been close and her step-sister has never wanted a closer relationship with OP. This request has come totally out of the blue.

The reason why her boyfriend won't be her birthing partner is that they both think that seeing her give birth would 'put him off her'. I genuinely can't even think of a twattier reason for the father of the baby refusing to support the mother during labour and the birth of their baby.

OP obviously still has PTSD from her own difficult birth and she found being her sister's birthing partner extremely traumatising. She, quite understandably, doesn't want to go through this again for her step-sister.

thornbury · 30/08/2026 03:13

Both my deliveries took place without the father or a birth partner present. The midwives and other staff were great and I found them more than enough. Having someone there who I wasn't close to, and who didn't want to be there, would not have been better. The second delivery was much more straightforward than the first and I had one midwife throughout with another dropping in for key moments. It helps if you get all of it done in one shift, though! With the first, I went through 4 shifts from admission to delivery (day staff, night staff, day staff, night staff again!)

DexTheDoggo · 30/08/2026 00:37

WayAhead · 30/08/2026 00:05

Thanks to a suggestion on the thread, I’ve said I’m going to say it will be too emotional for me due to my experiences, and with us probably going away around the due date, I can’t do it but I wish her all the best.

That sounds like a good message to send OP. Enjoy your holiday.

WayAhead · 30/08/2026 00:05

SALaw · 29/08/2026 23:37

I didn’t say it wasn’t? I didn’t say the OP couldn’t say no? I said that the step sister knows it’s a personal experience. If the OP says “it’s a personal experience” she will surely reply “I know”. So the OP needs a different thing to say.

Thanks to a suggestion on the thread, I’ve said I’m going to say it will be too emotional for me due to my experiences, and with us probably going away around the due date, I can’t do it but I wish her all the best.

OP posts:
WayAhead · 30/08/2026 00:02

JLou08 · 29/08/2026 23:38

Ooo that's cold. I don't think there's anyway to tell her without hurting her. You obviously mean a lot more to her than she means to you and it is going to hurt her when she finds that out, at one of her most vulnerable times too. I couldn't say no to someone if it would risk them giving birth alone.

I’m not cold, I just don’t have much of a relationship with her. She hasn’t shown much interest in me ever and this has come out of the blue. She must be desperate is all I can say and is using me because I’m a woman who has given birth that is vaguely connected to her. I do feel for any woman facing birth alone if it’s not what they want but I know I am not the person for this.

I will be as kind as I can be in my message and wish her well.

OP posts:
WayAhead · 29/08/2026 23:57

SALaw · 29/08/2026 23:39

You said she did have other people to choose from but now you think she has no one else to ask if it isn’t to be the partner?

She has people in her life. I’ve mentioned her partner, friends and my sisters although I’m not sure my sisters would do it either. For whatever reason, she hasn’t asked them, so yes, it’s doesn’t seem like she anyone else. If I’m the closest she has, I’m not sure what to say. It doesn’t make it my responsibility. We are not close.

I don’t want to hurt her or add to any stress she may be feeling as she is heavily pregnant. The thread has helped me word a message to her which I will send tomorrow giving her time to find someone else. I will also send a message to my sisters to warn them she may ask and so they can have time to think it over if they need to.

OP posts:
Epdrenching · 29/08/2026 23:54

Yanbu at all.
You are not close.
She is a step sister through marriage.
Not all blended families have children that become close.
It is a hugely personal experience and why would you want to share it with someone that you are not close to, simply because they feel it suits them to have you there.

Sharing the birthing experience with someone like that, who is having a baby with someone they met 5 minutes ago, leaves you wide open to be her go to person afterwards because of the experience.

If you are not close to her, yanbu to not wish to be involved.

SALaw · 29/08/2026 23:39

WayAhead · 29/08/2026 22:11

She knows we are not close and it will be awkward. It’s not to do with her wanting to share this with me, it’s just that she doesn’t seem to have anyone else. She can’t possibly feel close to me. We hardly see each other. We last saw each other on New Years Eve. We haven’t had the best relationship in the past and we’ve never had a deep conversation but we are civil as my mum married her dad. She is using me for convenience because I’m a woman who has given birth. She doesn’t want the new bloke there as they are both scared he’ll ’go off her’ if he sees her like that. I find it hard to deal with that level of twattiness.

You said she did have other people to choose from but now you think she has no one else to ask if it isn’t to be the partner?

JLou08 · 29/08/2026 23:38

Ooo that's cold. I don't think there's anyway to tell her without hurting her. You obviously mean a lot more to her than she means to you and it is going to hurt her when she finds that out, at one of her most vulnerable times too. I couldn't say no to someone if it would risk them giving birth alone.

SALaw · 29/08/2026 23:37

SouthLondonMum22 · 29/08/2026 22:06

Having sex is a personal experience too though. It's her choice not to have her partner there but that doesn't mean it is OP's responsibility to take her partners place when she very clearly doesn't feel comfortable with it.

I didn’t say it wasn’t? I didn’t say the OP couldn’t say no? I said that the step sister knows it’s a personal experience. If the OP says “it’s a personal experience” she will surely reply “I know”. So the OP needs a different thing to say.

Swipe left for the next trending thread