Just need advice on where to go with this. Child (8) has made me aware of many things her dads girlfriend has said to her in terms of commenting on her looks, what she can and cant wear amongst a lot of other little things. She has come home and told me that she went round her dads after school and almost immediately was greeted by his partner doing "the loudest scream she has ever heard" telling her to get to her room, no hello or anything. Whilst in her room, understandably, she was crying her eyes out having not known what she had done. His partner has then stormed upstairs and started to shout and swear at her all because I had cut her a fringe into her hair (something she has been begging for for weeks as all her friends have one). Her dad then come up and started shouting and swearing at his partner all whilst my daughter sat in her bed crying her eyes out, covering her ears. Her dad then threw a glass of juice over his partners head before pushing her out of the doorway which led to her stumbling back and almost falling over and stormed downstairs. His partner then slammed her door shut and told her to stay in her room. They then proceeded to argue downstairs and her partners daughter came in to check if she was OK and whilst doing so didn't fully shut the door behind her. Her dad and partner then came back up and his partner began shouting and swearing again, accusing my daughter of leaving her room to listen to their 'private conversation', she didn't attempt to correct her as she knew she wouldn't believe her. Later, her dad told her he would buy her any takeaway she wanted and she mentioned to me she thought he was trying to make her forget about what happened.
My daughter said she didn't speak to her till around midday the following day until they decided to take the children out and his partner took her shopping telling her she would buy her anything she wanted, again mentioned by my daughter that she knew why she was doing this. On the way home they decided to stop at a restaurant of her choice, again, the same response.
Ironically enough, I messaged 2 months ago telling him my concerns and asking him to speak to our daughter 1 to 1. I finally messaged again asking for an update and I received a huge message back saying basically I was making it up and she is obsessed with his partner and 'doesn't need protecting from her'. The following day all of the above happened. I have messaged making him aware I know of what happened and told him under no circumstances is anyone allowed to shout, scream or swear at our child in such a manner, but I have had no response.
I'm not sure if I'm overthinking or if i'm well without my right to take this further, I spent so many years being put down and being made to feel silly for the smallest thing whilst with him that I think I just need some confirmation.
TIA