Sorry I know this is probably not the right place but genuinely need urgent advice.
DD split with BF on Friday, he didnt live with her but did stay over quite often. There's a back story but basically he's controlling, there's previous aggressive and violent tendencies from him, he's been arrested for assaulting her a couple of months ago (drink related).
She took him back after previous issues and agreed to help him work through his drink problem and mental health issues but things have not improved, he went to one counselling session and said he doesn't need help and refuses to take anti-depressants prescribed for him. She's been very low over the past few weeks and has admitted she can't cope with his issues and she's afraid of him.
on Friday she had a good talk to him and explained her feelings, it didn't go down well with him but she believed after hours of him not accepting it he agreed he understood. He wouldn't leave that evening and said he would sleep on the sofa and leave Saturday morning. DD didn't want to escalate anything so went to bed and got up for work Saturday morning under the impression that he would be gone when she got home.
Sorry, trying not to ramble .... Situation now is that he went out drinking all day Saturday taking her back door key and went back to her house before she finished work, he's refusing to leave. DD and I have tried reasoning with him by telephone but he's not listening, he was drunk last night so wasn't going to get anywhere with him really. We called 101 for assistance but couldn't get through although we held for an hour and 40 minutes, as it got late DD stayed the night with us. He's messaged her to say hes not leaving but DD is at work until 5pm tonight, DH and I were meant to be going away this weekend for DH birthday but now can't go because of all this and I'm at my wits end not knowing what we can do. DH and I could go round and eject him forcibly but we don't want to make matters worse or end up on the wrong side of the law! Can anyone please advise?