Yeah she doesn’t love him. He’s just the embodiment of her own self-hatred. People who keep returning to their abusers are trying to heal a wound that was inflicted early on when they were made to feel like they don’t matter and don’t deserve someone who truly cares about them. This relationship taps into some deep need in her to try to 'fix' her feelings of self-loathing by making him love her, but we all know that’s never going to happen. She’s replicating her relationship with her father by finding self-centred men who make her chase after crumbs of affection. It’s cliche but true that she needs to work on herself and develop self-love to truly heal. You sound like a great mom. I hope your daughter finds the inner strength to deal with her pain so she can move forward with her life.