It's a fascinating conundrum. If that's the way her husband treats her when angry, then that is the need to control not love. I can understand her choosing to separate from him. However, she needs to be honest both with herself and with this other man if she chooses to date him. If she's just leaving to once again move onto someone else because the compliments make her feel good, it won't end in happiness. He needs to know and accept her for who she truly is and so does she. I would say that she should first come to a good place with herself before beginning a new relationship. That way she can honestly say openly, this was me before and this is me now. If someone else can't accept that then the relationship won't work and it certainly won't work if she goes into it hiding things for him to discover later.