Please Help;..am I loosing my friends?

Amanda Asked: Please Help;..am I loosing my friends?

Well, long story short(I guess); My friend had problems with her parents and she got "kicked" out because of it, so she stayed with me until she could go back, and this New Year, me and her were planning on going to a party, and as usual, my friend got way too drunk. and when we came home at 3am with my mom, and she had relaxed for a while and my mom went to sleep, she asked that if it was ok to call the guy she is seeing(which is a douche-bag and a player), to get here in my house. I got angry because she had already embarrased me enough and now she wanted me to let a stranger into my house?!.. of course I said no, if they wanted to see each other they can go outside. she said ok.

but then a little while later after I slept a little, I woke up by hearing my sister yelling, I went to see what was happening, and in my room was her and her guy! (they weren't doing anything though). my sister completely freaked out over the guy(she knew him already) and kicked him out. the next day her mom heard about it and took her home again and apologized to us. Then a few days later, she came home to me, gave my mom flowers and apologized to her and me and we talked. Unfortunately my sister told my dad about it, and now she can't come home to me anymore, and because of that neither can I to hers. then after the vacation, our exams were starting, and we spoke and laughed as usual. but after that week, she didn't speak to me that much as usual or wanted to hang out or anything, she only hugs and says hi but not Very happily and speaks to me occassionally since this week started.

and 2; This day when we were all working on our project in class, I was with one of my other friends on our computers, and when the day was almost done, I decided to relax on the computer a bit(not sleeping on it xD) and she kept telling me that I was supposed to work, I will get a horrible grade, a horrible future etc, etc, etc! she had spoken to me like that All day! in the start I think she were helping, but Now she was just provocating me! so then I said that I've have enough of listening to that, I've heard it All day! then she stopped. she didn't say anything. Little after that I went home.

I have no idea what to do or what is happening!..