Posting anonymously just for safety!

So I have this friend who has kids and she’s currently engaged to a man who has kids as well. She tells me he’s verbally abusive. He will talk down to her and expect her to sleep with him. She’s terrified of him. We went out a few months ago and she wanted to go with us (we had it planned) but the day of he said no he’s having friends over. We had a few drinks at my house where she was going to hang before we all went to the club. She then decided to come with. She was nervous what he would say. Luckily everything (from the outside) was ok. Then a few weeks ago we went over with everyone’s kids(no kids for me haha) I could tell she was scared of him coming home into he chaos (kids were just having fun not crazy but still) and dishes not being done freaked her out. She has told us she doesn’t want to marry him and doesn’t want to have sex with him but she’s afraid to leave. Which I totally get! My question is how can I be there for her? I’ve never been in a similar situation so saying just leave you deserve more feels wrong. Even though it’s true I feel I have no right to say that. I understand it’ll be difficult for her(don’t know to what degree) but I just want her to be happy. Any advice from survivors on how to be there or what to say? Thanks in advance