But, I know her and I know that she's just a teenager in a 40 year old's body who doesn't give a crap about anyone but herself. I know she's going to get back with him if she keeps in contact with him. I just don't want her putting my four year old sister through any more crap than she already has.
I feel like there's not much I can do to get her to stop talking to him (mostly because chose to live with my dad because she's too much to deal with). And what's terrible is that my dad can't fight for custody for my younger sister because he's not her biological father. How do I get my mother to see how incredibly horrible she's being?
I'm not crazy, I'm just a little unwell.