Sister?

Recently there has been a lot of drama going on in my group of friends. I absolutely hate drama but that is not why I am writing this. This drama included two people that I consider family. Ama and Fried Rice. They were in a relationship and the relationship ended badly, very badly. Well because I refused to take sides Ama decided that I was choosing sides. That small choice on her end destoryed a lot of her faith in me. Finally she told me she was sorry for making me choose sides and then we stopped talking. We didn't talk to each other for months. Finally I sent her an e-mail asking her why she didn't answer anyone's text messages, asking if something was wrong. I also asked about K who had had a minor heart attack. Then at the end of this e-mail I told her, "I love you sis". About a day later she texted me back and everything was fine. We talked about K and about how we were doing each. Then she said she had to go because of lunch and that we'd talk later. HOURS later I got this text message from her. When I read this message I was in total shock. It said something like this, "Ira something you said eariler bothered me. Ira I wanted you to know I do not consider you a sister anymore. You may be my friend, but you are not my sister." In a way I know why she said it but in a way I don't. I feel like my life is going under. I thought me and Ama would go to school together, live as neighbors, and raise our kids together. But because of this drama that everyone was dragged into that was messed up. Why couldn't the drama between them just be between them? Why did it have to ruin that friendship? This is why I hate when friends date because things like this happen. Ama also did this with Virus but it wasn't as bad. I just don't know what to do...what to say...what to think.