I dont wanna loose my bestfriend for good.?

Friday I had a party and my friend sleptover and she asked if we can sleep in my room and I said no because I don't have a dvd player up there 2 watch the movie we were gonna watch and so then she told me she didn't feel good and so she was going home and I said okk. And then after she left me and my other firend decided oh well we aren't watvhig the movie anymore and so we went into my room and then the next mornen I texted her and asked her how she was feeling and she was lke really u went into ur room after I left after u said u didn't want to and I told her that it was bc we weren't watchin the movie and more and she called me a liar and I accidentally got really mad and said well at least I didn't fake being sick and then she called me a brat and said she had another bestfriend she was goonna go hangout but the I texted her new so called "bestfriend" the next day and she said they never hungout so I texted her and said iim the liar ahahahaah even though u didn't even hangout with sarah and then she didn't respond and on twitter she called me 2 faced and crap then I sent her a really long apology text even tho I feel like I had nothen to apologize for and she hasn't responded and its been 2 dayss. And I can't get. Her 2 respond. Before Friday we were like sister we hungout everyday and I really don't want to loose her. What can I do. I know this sounds dramatic and immature but I don't know what to do.