I am having a problem with somebody else's relationship. It's my sister. I love her dearly and I know that she is being beaten by her boyfriend. She is tied to him by the fact that she has a child of six months by him. She doesn't want to come to her family for help. I think that this is largely because she is ashamed of herself and his behavior toward her. I simply cannot "mind my own business" because I am genuinely worried for her safety and the safety of my niece.
Part of me wants her to sort the problem out for herself, but she is so immature and is used to having men do things for her. This has been going on for some time now. What can I do to stop him?