what should i tell her to do

By telling her how you feel, you are a true friend. Tell her that you care about her. you don't want to see her live her life with this cycle that she is now. Give her your support and just be honest. She won't be mad ( or at least, she won't stay mad if she does get mad). Friends from 5th grade are hard to find....right now she needs you to be her friend and be honest with her.

Tell her about your thoughts, coz that why your friends? saying your thoughts doesn't mean that its how she would do it but simply your opinion. Your not trying to dictate her on what to do but then your showing her what other options she have. I also have a friend like that and what I always asked her is "Do you still love him?" coz' if that's the case whether she have a bright future with him or not, its beyond our reach. I mean I can't blame her for going back to his arms time and again. Its LOVE. Sometimes no matter how intelligent you are, its makes you feel like an idiot. ] So I think just be there with her, If she wants someone to talk to, just listen. No matter how may times it can be. No matter how tiresome it can get, coz its always same topic, same problem all the time. Just listen and be there beside her. It surely helps.

Sadly sometimes all we can do is sit back and do nothing. It stinks to do so, but if you tell her what to do, she may resent you, and then she will turn even more so to the guy you are wanting her to get away from. I am sure you have in your own ways let her know how you have felt, but dont push the issue, like i said it will just distance the two of you, and increase the chances she keeps going back to him. Just remind her that you are there for her, and when she is ready to leave him, she knows she has a true friend in you, to turn to.