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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To warn parents about teenage GF

294 replies

Stayoutofitorno · 30/12/2025 22:59

DS had a party for his 18th birthday last night.

One of his oldest friends brought his gf along. They’ve been going out for a few months and are apparently joined at the hip according to his parents.

We cut a cake and DH and I said a few words. For extra context DS had a very difficult year with the death of his best friend. It was important for us to take a moment to mark how proud we are and tell a few stories about him.

During the speeches the friend’s gf was talking loudly and being rude. One of DD19’s friends asked her to be quiet and she just swore at her and carried on laughing and talking. DD19 went over to shush her and got the same reaction. She told the gf if she couldn’t be respectful she would need to leave. The gf said fine and out of nowhere slapped DD hard across the face. Her cheek was red and hot an hour later and her lip was swollen. DH and a female friend of ours stepped in and ensured she left. Her bf was mortified. DH told him he was welcome to stay or come back to the party later but he didn’t return.

Everyone who witnessed the incident agreed that DD was calm and the reaction was completely unjustified.

AIBU to get in touch with his parents and let them know about her behaviour? She’s clearly pretty volatile to be hitting someone she’s never met before in their home in front of their parents while surrounded by people. I worry about what she might be like in private. But they’re 18, so should we stay out of it? We’ve known his parents for years and have socialised together. We don’t know the girl at all and DD is unlikely to come into contact with her again.

OP posts:
KimuraTan · 31/12/2025 11:08

Can’t believe you’re waiting this out and not reporting the assault.

User8008135 · 31/12/2025 11:08

What's her bf and you sons reaction to this?

If my gf hit my friends sister then, unless self defense, she'd be dumped. Mortified is a good start.

If my sister was slapped by my friends gf, I'd be making it clear to my friend that his gf is out of order and not want anything to do with her.

Anything less from either boy and I'd think very poorly of them. Forget the parents of the boy here, it's the other people's reactions (including this boy and your son) I would be looking at. If they are just glossing over, then that reflects badly on them. In terms of the parents, if ypu speak to them and are friends then yes I'd be open and honest about what you saw and how you feel but I wouldn't call them up to get them involved.

MixedFeelingsNoFeelings · 31/12/2025 11:07

DH and I are going to wait to see if his parents reach out to us. We are pretty sure they will if they are told what happened. If they don’t we’ll let them know so they have a heads up about what she’s like. They’re very level headed people, as are we I like to think, there will be no drama out of this.

A very sensible response. Give it a bit of time, and if they don't get in touch with you, you get in touch with them.

Speaking personally, I wouldn't couch it in terms of 'I only mention it because I'm worried she might be violent towards other people.' I'd be justifiably upset and angry on my own DC's behalf, and that's reason enough to raise it with DS's friend's parents. I'd just set out the facts and let them draw whatever conclusions they want. The point is that you're not letting this astonishing behaviour be swept under the carpet.

Divebar2021 · 31/12/2025 11:06

BeAmberZebra · 31/12/2025 10:54

Well we have a lot of evidence on how the police treat young possibly working class girls from possibly troubled backgrounds dont we? That’s why a little bit of compassion and due diligence before getting them involved might be kind. Ask the girls in Rotherham etc how they would feel about faith in professionals.

What a ridiculous comment. This is a straight forward assault witnessed by many people. If it was reported the girl might get arrested and she might get cautioned. This is nothing like the scenario in Rotherham / Rochdale which actually involved grooming of young girls and is in no way similar to this matter. Unless you’re suggesting that the OPs daughter is the working class girl who should be concerned??

KimuraTan · 31/12/2025 11:06

Double post

KimuraTan · 31/12/2025 11:04

I’d definitely be reporting it to the police - to show your daughter support and ensure this awful girl is being dealt with appropriately. Might build up a profile as this doesn’t sound like her first rodeo. Bet she’s abusive behind closed doors.

HundredMilesAnHour · 31/12/2025 11:02

Why doesn’t your DD want to report this to the Police @Stayoutofitorno?

It sounds like this was a pretty serious incident and not something to be taken lightly. If this girl was so brazen to behave that way in front of so many people then it’s possible that this is ‘normal’ behaviour for her and may not be the first time. Your DD speaking up may help someone else later down the line if the Police have a record of this incident.

Potteryclass1 · 31/12/2025 10:59

If I was the parent of this friend then I would 100% want to know. Even if I heard elsewhere I would want to hear it from the hosts of the party. If I was worried by what i learned, it would reassure me to know that you r DS said to his friend that he was welcome back (but he didn’t come).
as long as you frame this correctly then you are doing the mature thing. Address it, explain factually, say something like “I’m just calling to make sure this doesn’t end up out of proportion or the story mixed up through Chinese whispers etc. We like your son, if it was the other way round we would want to know, we hope you don’t think we are interfering, it’s just to set the record straight and let you know we were a bit concerned about her behaviour…”,

BeAmberZebra · 31/12/2025 10:54

Well we have a lot of evidence on how the police treat young possibly working class girls from possibly troubled backgrounds dont we? That’s why a little bit of compassion and due diligence before getting them involved might be kind. Ask the girls in Rotherham etc how they would feel about faith in professionals.

StealthMama · 31/12/2025 10:51

SALaw · 31/12/2025 10:37

Sorry what does that have to do with the comment that it isn’t her story to tell?

She is ‘sharing the news’ with the wrong people. Social media and not police.. A crime she apparently doesn’t being tolerated is being totally tolerated.

graceinspace999 · 31/12/2025 10:48

RightOnTheEdge · 30/12/2025 23:14

I think she needs reporting to the police not her boyfriends parents.
They are not in primary school anymore they are adults. She assaulted your daughter in your house in front of you!

Yes!

Flowerlovinglady · 31/12/2025 10:47

I wouldn't necessarily warn the parents as such - just give them a "just letting you know" factual account of what happened and confirming that their son is still welcome at future events. I wouldn't get into any assessments of what you think she is like or what trouble may lie ahead for him - they can make those links themselves and anyway that's his business.

"Just wanted to let you know that we had DS's 18th last night and during the speeches your son's GF insisted on talking loudly throughout and was rude, when asked to quieten down and be respectful she hit our DD in the face. We had to ask her to leave and (your son) went with her. We did offer for him to come back on his own but we didn't see him again. (Your son) will always be welcome but obviously we can't tolerate this sort of behaviour from his girl friend."

rainbowstardrops · 31/12/2025 10:45

I’d have already told them!
If they’re good friends of you and your family then I’d be pretty pissed off that you didn’t let me know. What makes you think your son’s friend or his batshit girlfriend would tell his parents?
Contact his parents asap!

ladyamy · 31/12/2025 10:43

Thelondonone · 30/12/2025 23:00

They will find out anyway. It’s not your news to share. They will ask you about it. Let them bring it up.

It happened in the OP’s home, at her DS’s party and it was her DD who was attacked, so I’d say it is her news.

Deliberations · 31/12/2025 10:42

Why wouldnt you tell your friends that their son's GF is violent?? At any age? They may be totally unaware of what sh'e like - but also probably not and you telling them might just confirm suspicions that they already have.

pusspuss9 · 31/12/2025 10:38

Franjipanl8r · 31/12/2025 00:37

Absolutely share that news, not telling them is minimising. Bad things happen when good people do nothing and just stand by.

this is so true!

SALaw · 31/12/2025 10:37

StealthMama · 31/12/2025 10:34

Which she so far as done nothing about except tell everyone on Mumsnet.

How to be a role model 101.

Sorry what does that have to do with the comment that it isn’t her story to tell?

SALaw · 31/12/2025 10:36

TappyGilmore · 31/12/2025 04:38

YABU. It just sounds like nasty gossiping. If you knew her parents, then fair enough to speak to them about what happened, but not to go to the BF's parents. And it might not actually be taken very well by them; they might like her very much and think "well that's your side of the story, we haven't heard hers", they might think that you are blaming them (given it was their son that brought her to the party) etc.

She sounds completely unhinged and I don't see why you wouldn't report to the police if your DD wanted to, but don't go gossiping.

That might be the case if OP wasn’t there to witness what happened and was just passing on a story from one of her children but she SAW it happen. She KNOWS what happened.

StealthMama · 31/12/2025 10:34

SALaw · 31/12/2025 10:27

Surely it very much IS her news to share? The person in question assaulted her daughter in her home!

Which she so far as done nothing about except tell everyone on Mumsnet.

How to be a role model 101.

SALaw · 31/12/2025 10:27

Thelondonone · 30/12/2025 23:00

They will find out anyway. It’s not your news to share. They will ask you about it. Let them bring it up.

Surely it very much IS her news to share? The person in question assaulted her daughter in her home!

Stillupatmidnight · 31/12/2025 10:25

Yep, be clear to your daughter, we don’t tolerate violence and report.

Stillupatmidnight · 31/12/2025 10:21

Absolutely, with no shadow of doubt, tell them.

StealthMama · 31/12/2025 10:17

BeAmberZebra · 31/12/2025 10:03

Final thoughts (I hope). As a society we are confused about when we treat young people as adults in all circumstances and when we don’t. Strong evidence that brains don’t fully develop until 25 which is accepted as far as sentencing is concerned in parts of the country but ignored when giving sixteen year olds the right to vote. Similar re cigarettes alcohol military service marriage etc. This confusion is well demonstrated in this thread by advice that DDs wishes be ignored but 18 year old is an adult and should be treated as such with no leeway. Generally most posters think the parents are the arbiters of what should happen here re DD DS BF as they know best etc but 18 year old girl fully responsible adult and should face all consequences.
id make sure i know more about this girl, her life, her normal behaviour before taking any action which might have devastating consequences re how her parents/ carers would react and what action police may take all of which is very hard to anticipate in the UK today.

Nonsense.

Consequences.

it is extremely unlikely that this assault was the girls first assault, given her confidence at doing it in public with witnesses under someone else’s roof. Parents present. What are the real adults in the room doing other than allowing that to be acceptable behaviour by not reporting it. The police might give her a caution, or she might have a long list of cautions and firmer consequences are needed.

Alternatively, to be so brazen, the girl could have been drugged up to her eyeballs because she’s a victim of something herself.

How do we tell the difference between a bad egg who commits a crime or a victim who repeats negative behaviour?

We don’t. We don’t have to. We call the police and let the professionals handle it.

Trying to ‘to find out more’ about the girl, to make a decision yourself as who the justice system should apply to is by definition taking the law into your own hands.

It was a common assault. It should be dealt with as that.

Which anyone who was there and witnessed it can report, not just the victim of the crime. OP.

BillieWiper · 31/12/2025 10:16

No you don't contact her parents. She's an adult. If your daughter wants to try press charges for the slap then she needs to speak to the police.

Otherwise just ban the girl from your house. It's unfortunate and she's clearly got problems but at that age parents shouldn't be getting involved.

I have to say that if someone thought it appropriate to 'shush' me then I would find that pretty rude. That's not what adults do in normal conversation. Would she have been 'shushed' if she was a man?

Not that it's ok to go on to slap someone they barely know.

Jinglejells · 31/12/2025 10:14

NotnowNanette · 30/12/2025 23:11

I’d be reporting her to the police & telling your friend. It’s pretty ballsy slapping someone in their own house in front of a room full of people - wonder what she’s like in private..

This. Women can be violent as well. His parents need to know so they can speak to him about getting away from her

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