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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To tell my sister I don’t want to see her anymore if she doesn’t discipline my nephew for biting me?

1000 replies

IGrewUpInTheFallOut · 30/11/2025 19:21

My sister is a single mum to two children - my nephew, who is 14, and my niece, who is 13. My nephew has autism and her husband left when he realised how tough things would be.

I’ve just got back from a weekend of babysitting for her which has been a bit of a nightmare. My nephew used to be quite violent and angry, but my sister put him into kickboxing when he was 7 and he’s flourished, and it has really helped him regulate himself.

When I arrived yesterday, she warned me that he was quite overstimulated and that I just needed to follow the basic routine (get him to bed at a reasonable hour). I left him to his own devices until I went into his room at about 10:30 and asked him to put his iPad down and go to sleep.

He immediately grabbed hold of me and bit my arm, it must have been about twenty seconds before he let go. He was screaming at me to leave his room by that point, so I did, and went downstairs. I told my sister when she got home today, and she said she would have a word with him.

I’ve just got home and seen how bad it is (I’ve attached a picture). I sent it to her and asked how she had dealt with it and she said she asked him, but he said he felt overwhelmed and didn’t want to go to sleep, so he lashed out. She says that in her mind, that’s the end of it and she won’t be pushing it further as he can’t help feeling overwhelmed.

I’ve said in that instance I don’t feel comfortable being around him again and I won’t attend family Christmas. Now she and my mum are telling me that I’m selfish and I will ruin the Christmas period for everyone if I don’t come.

AIBU to draw this line in the sand?

To tell my sister I don’t want to see her anymore if she doesn’t discipline my nephew for biting me?
OP posts:
Elektra1 · 30/11/2025 22:08

I think “I don’t feel comfortable being around him” is a massive over reaction in the circumstances. “I don’t feel comfortable babysitting him alone” is reasonable; I’m not coming for Christmas (which presumably you’d previously said you would attend) is just dramatic.

Arghhhhggggggggggg · 30/11/2025 22:09

Leopardsandcheetahsarefast · 30/11/2025 22:01

Ok you know him and I don’t.

My autistic daughter knows what she is doing, as does my ND step son and other children. So yes they need to know this has got an impact.

what if you need stitches or worse?

my best friend works with special needs pupils. All 14 years and above and there is usually 12 children in her room and despite them all needing 1-2-1 they are normally short staffed and she usually has 8-10 staff in her room. She has been punched, kicked, bitten usually once a week. The school has a no sanction policy - none. She has known these children for years and worked with them daily, they can regulate - but she firmly believes after 10 years there that the majority of the behaviour stems from no exclusion policy and no parental sanction policy. Ones who parents do sanction are better.

My friend works at an SEN school and has been horrifically bitten in the past. She has said that there are definetly some children there who behave the way they do because they have no repercussions at all.

I think a lot of people hear autism and imagine a non verbal globally delayed child. There's lots of levels to autism and a lot are high functioning who struggle to regulate themselves. It doesn't give them the right to attack people and people shouldn't excuse it for them either

Vivi0 · 30/11/2025 22:09

Arghhhhggggggggggg · 30/11/2025 22:05

OP asking her sister to punish her child by taking his tablet or not allowing him to go to a club AFTER he has assaulted her really isn't asking the sister to put OP before the child l. It's asking that there's consequences for his attack.

Teaching him that he doesn't have any consequences or have to apologise for assaulting someone isn't in that boys best interest at all.

Those with experience of autistic children are posting otherwise so I’m inclined to listen to them about what is in the boy’s best interests.

Thatsalineallright · 30/11/2025 22:09

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Well I'm one person who feels it's unreasonable for OP's sister to minimise her son's behaviour.

Silverbirchleaf · 30/11/2025 22:11

Elektra1 · 30/11/2025 22:08

I think “I don’t feel comfortable being around him” is a massive over reaction in the circumstances. “I don’t feel comfortable babysitting him alone” is reasonable; I’m not coming for Christmas (which presumably you’d previously said you would attend) is just dramatic.

Would you feel comfortable socialising with someone who has just attacked you?

Vivi0 · 30/11/2025 22:11

IGrewUpInTheFallOut · 30/11/2025 22:08

You just don’t want to listen to what I’m saying.

But she has listened to what you are saying, and she is absolutely right, it still doesn’t make sense.

Poppyseeds79 · 30/11/2025 22:11

Vivi0 · 30/11/2025 22:07

Why do you keep making over the top inappropriate and incomparable references on this thread?

Because unfortunately that's often the way it pans out? ...

Child of 14 assaults someone, everyone totally ignores it, child thinks "I can do what I want with no consequences". Child assaults someone when they hit 18... Child goes to prison for 8weeks and their life completely unravels...

Everyone says "OMG! How did this happen?"... Everyone says well yeah there were strong signs at 14 🙄

OneBookTooMany · 30/11/2025 22:11

Is autism going to be the new excuse for a man when he is in the dock accused of assaulting, raping or murdering a woman?

Some of the posters on this thread are nothing short of apologists for male violence. He was over stimulated, she didn't handle him properly, she wound him up, she's exaggerated and other excuses that have used to justify male on female violence since we were living in caves.

A fairy wand won't be glittered over this lad's head when he is 17, especially as his mum is doing nothing to discipline him, a 14 year old male who knows enough not to kick off at men but instead treats his mum, gran and aunt to his over stimulation.

I would be outraged if this boy attacked my daughter, bit her for several seconds or beat her senseless and it was then revealed that he had already displayed this violent behaviour towards women but nothing was done because he was autistic. I would blame his mother for not having it put on record so that my daughter could have run a million miles from him.

It really is very very worrying that autism is now being offered up as an excuse for males from 14-94 to literally get away with violence towards women. Did she upset him? Did she over stimulate him? Did she tease him? Did she not realise that he did not like being told no? Did she wind him up? Did she exaggerate her injuries?

It won't be long before it becomes the norm-foolish women on here (and I presume they are women without daughters) rush to offer autism as a reason why violent males should not be punished and punished hard.

Male violence on women is male violence on women and there is never, ever ever an excuse for that whether the criminal is autistic, angry, a cunt or is disappointed that he has a micro penis.

Please don't let autism is an excuse for violence slip into being acceptable.

It is women who will pay the price.

random9876 · 30/11/2025 22:11

You definitely don’t need to look after someone in a situation that frightens you. Your sister has a choice - to take steps that reassure you that the situation with your nephew can be safe in future, or accept that you aren’t reassured, and won’t be babysitting any more 🤷. It’s really her choice rather than yours at this point, you’ve said your piece.

Arghhhhggggggggggg · 30/11/2025 22:11

Vivi0 · 30/11/2025 22:09

Those with experience of autistic children are posting otherwise so I’m inclined to listen to them about what is in the boy’s best interests.

I'm autistic, so is my child 🤦‍♀️ so what you mean is you have rigid thinking and you clearly think you know better than someone who has a living experience of what autism is like.

Deary me, no point even speaking to some people is there. This conversation is irratiating me so does that now give me the right to start verbally abusing you because I'm autistic? Because I'm overwhelmed?

No, didn't think so

Netcurtainnelly · 30/11/2025 22:12

ShesTheAlbatross · 30/11/2025 20:00

I’d go for Christmas, but I think a potentially violent teenage boy isn’t someone I’d be babysitting.

Whats the point going, op wont enjoy it.
We arent obligated tl spend time with people because they are family.

MerryAquaSquid · 30/11/2025 22:12

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nomas · 30/11/2025 22:12

Vivi0 · 30/11/2025 21:51

The sister has dealt with her son in the most appropriate way for his condition, yet the OP is issuing her sister with ultimatums to force her into dealing with her son in a way that the OP sees fit, which is not appropriate or suitable for a child with autism.

How is it appropriate? No apology from nephew, no apology from his mum, no card or flowers from nephew? The mum telling OP ‘In my mind, that’s it’ and ‘you have to keep babysitting otherwise I lose my nights out’.

How is that appropriate for OP?

IPM · 30/11/2025 22:12

IGrewUpInTheFallOut · 30/11/2025 22:08

You just don’t want to listen to what I’m saying.

I'm listening to what you're saying and it still doesn't make sense.

You're either utterly terrified of him or your not.

And you have literally no idea whether your sister would step in during an attack, whether she punishes him or not.

Elektra1 · 30/11/2025 22:13

Silverbirchleaf · 30/11/2025 22:11

Would you feel comfortable socialising with someone who has just attacked you?

I’ve been in a room many a time with someone who has previously assaulted me / been verbally deeply abusive to me. Because I’m an adult capable of identifying safe boundaries. I don’t want to be alone with that person any more: fine. I want to make a massive drama all about me: not fine.

MerryAquaSquid · 30/11/2025 22:13

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IGrewUpInTheFallOut · 30/11/2025 22:13

IPM · 30/11/2025 22:12

I'm listening to what you're saying and it still doesn't make sense.

You're either utterly terrified of him or your not.

And you have literally no idea whether your sister would step in during an attack, whether she punishes him or not.

I think the fact she refuses to see how serious this is shows that she wouldn’t.

OP posts:
Silverbirchleaf · 30/11/2025 22:13

nomas · 30/11/2025 22:12

How is it appropriate? No apology from nephew, no apology from his mum, no card or flowers from nephew? The mum telling OP ‘In my mind, that’s it’ and ‘you have to keep babysitting otherwise I lose my nights out’.

How is that appropriate for OP?

Edited

And sister is more worried that she has lost her babysitter, rather than acknowledge her son attacked op.

Hollyhobbi · 30/11/2025 22:14

Your sister should be more grateful to. A 5 hour drive in winter weather is no joke. And it's interesting your mum said she's basically afraid to mind your nephew because she's afraid of what he might do to her!

IGrewUpInTheFallOut · 30/11/2025 22:14

This reply has been deleted

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

Would it stop me being terrified? No. Would it make me more comfortable because it would make me feel like they would step in? Yes. Apparently some people can’t comprehend this.

OP posts:
MsSmartShoes · 30/11/2025 22:15

It’s awful that he bit you, and your sister should do something, but I don’t know what.
Dont fall out with your sister about it though - she has a lot on her plate.

Pipsquiggle · 30/11/2025 22:15

@IGrewUpInTheFallOut

I think you need to be very careful about not getting entrenched into an ultimatum with your family - the it's 'me or them' choice is really not helpful

You have said yourself that this is very unusual for him to act in this way.

I absolutely agree that you should say you don't want to be left alone with him and you can tell your DSis that you are disappointed with the sanctions she put in place.
However, you are not his mother. You don't get to impose your rule set on another family and you don't get to choose the punishment.

Your sister will always pick her son.
If you ask the rest of your family to 'pick' a side, they will probably pick your sister as they will want to see the GC.

Vivi0 · 30/11/2025 22:15

Arghhhhggggggggggg · 30/11/2025 22:11

I'm autistic, so is my child 🤦‍♀️ so what you mean is you have rigid thinking and you clearly think you know better than someone who has a living experience of what autism is like.

Deary me, no point even speaking to some people is there. This conversation is irratiating me so does that now give me the right to start verbally abusing you because I'm autistic? Because I'm overwhelmed?

No, didn't think so

Oh look, another over the top post.

Dial down the drama.

I have no experience of autism, so I’m reading and listening to those who do. Many have posted on the best way to deal with these kinds of situations.

I said those exact words. Nothing more, nothing less - and look your response.

so what you mean is you have rigid thinking and you clearly think you know better than someone who has a living experience of what autism is like.

I have zero interest in listening to anything you’ve got to say.

SpaceRaccoon · 30/11/2025 22:15

And you have literally no idea whether your sister would step in during an attack, whether she punishes him or not.

My guess is that she wouldn't, but would blame OP for any attempt at self defence.
I wouldn't want to spend Christmas around someone who had attacked me either. She's not a chew toy.

MerryAquaSquid · 30/11/2025 22:16

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