I read a lot of these sorts of threads on MN but didn't think I'd be asking for advice.
She split up with him last year because he hit her but they gradually got back in touch. Last night they were away in a hotel and he got angry, next thing she knew she was waking up in the hotel room with paramedics round her and the police putting him in handcuffs.
He's been remanded so she's not worried tonight. The police were putting pressure on her to make a statement, but they did say they had enough evidence to charge him with gbh anyway. I said she can change her mind about the statement at any time, it doesn't have to be now (I think that's right?). She feels torn and sorry for him. And also ashamed 
Wish she could see how great she is and how much of a shithead her ex is. Honestly. She's a fab person, will give anyone anything. I do think her self esteem could do with a boost tbh, in general not just because of this although it really doesn't help.
What would you do to support a mate? I don't want to hector her about what she should do, I gently suggested counselling which she can access through work. I've read people suggesting books and things in this sort of situation. What would be best?