i have been in a similar situation not too long ago. the bloke i was seeing used to hit when he was angry too. my mum told me over and over not to go near him but that made me more determined. when i eventually wised up and broke it off he got really weird and aggressive, he punched a tree and told me i broke his heart. then he started following me around, i had to change my whole routine several times. It was really scary and i realised i should have listened to my mum from the beginning. your daughter will wise up eventually. you have done right by limiting her contact with him and hopefully she will see you have her best interests at heart