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:
HarpieDuJour · 29/08/2026 16:40

I don't think it's about "being family enough", that's unfair. They aren't close, and the OP doesn't want to. Presumably she felt differently about her sister.

MatildaTheCat · 29/08/2026 16:39

Just tell her that you are likely to be away so can’t commit and because she needs to know her birth partner will be available it’s best that you decline. Say you are honoured to be asked.

You could maybe offer support in other ways around the time of birth and post natal period?

thisismeithinkorisit · 29/08/2026 16:38

it's entirely your right to decide she isn't family enough for you to put yourself out, and that you'd rather go on holiday. it doesn't matter whether other people think you're being unreasonable or unkind

HarpieDuJour · 29/08/2026 16:37

Being a birth partner is quite an intimate thing, and if you aren't comfortable with it then you should absolutely say no. You won't do a great job if you are uncomfortable, and just becase you've done it twice for your sister, that doesn't make you the family doula for all time.
For what it's worth, I didn't have a birth partner at all for my last birth and it was fine. Actually, it was the best of all my births and I was never left alone.
If you don't feel like you can be honest, then say you have already made plans and you would hate to let her down if the timing is wrong.

WayAhead · 29/08/2026 16:36

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

lol. No. Husband and children.

OP posts:
Whynotecinusername · 29/08/2026 16:35

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

Whynotecinusername · 29/08/2026 16:35

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

Whynotecinusername · 29/08/2026 16:34

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

WayAhead · 29/08/2026 16:33

Are doulas that common? How much do they cost?

OP posts:
KookyScroller2 · 29/08/2026 16:29

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

KookyScroller2 · 29/08/2026 16:29

This reply has been deleted

This has been deleted by MNHQ for breaking our Talk Guidelines.

Swipe left for the next trending thread