ok i only have one side of the story, yours, and as such i can only base it on that, compounded by the grammer at times made it a bit hazzy.
but here is the point, if she is in college she is in a situation wher you are either manipulated or are the manipulator, or you actually find real friends, she does not realize the difference between people looking out for her and people using her as an end to there own motive, and i must say they sound like some dumb motives if it only revolves around parties and who is sleeping with who.
now that aside she is lieing, and a lie is a art form, and if she making stick drawing and using the same drawing over and over to explain away thyen she is being a fool and you are putting up with somthing you should not be
also the fact that she and you were given free boarding for two terms by some guy is very “intresting”
in this time of life there are things that change in people, and if she is not aware of them then it is going to eat her. this is not about control, this is about trust, and you need to decide weither you trust her, and in turn you need to level with her and tell her that if she wants a relationship with you that you want a commitment on her part, and ask her to not do the things you do not like. in turn if things go seperate you need to deal with that and move on.
but if you do not level out about what you need in a relationship and about how you feel about the actions and behaviors of those around her than, even if you do not stay together she is missing an opinion from someone she has spend a part of her life with.
but like i said there is no right and wrong, she should not be letting herself be used like this but in the end there is only point of view, and you should share yours with her.