Lots of things. She was in a terrible relationship with a guy much older than her. He emotionally abused her. I confronted her about it a number of times and she denied it every time. One night, she sent me a drunken text message saying she hated her boyfriend and wanted to leave him and she's sorry she didn't listen to me when I told her he was bad news. The next day she denied sending it. A few months later, she tried to leave him and he threatened suicide. He said if she left him, he would stop taking his medication and he would die a slow, painful death and it would be all her fault. She stayed. A few months later, she tried to leave again and he guilted her into staying by telling her he bought a ring and was going to propose to her and if she didn't marry him he would have wasted all of his money on nothing and he would kill himself and it would be all her fault. She stayed for a couple more weeks and then he broke up with her. He hadn't bought her a ring. He made all his friends and his brother and sister call her at all hours of the night telling her what a terrible person she was and it would be all her fault if he was found dead. He didn't kill himself, of course. It was all a fucking mindgame. A few weeks after they broke up, we went to England with a mutual friend of ours for her birthday. She got ridiculously drunk and refused to go back to the hotel with us. She went off with a random guy. I was so worried about her - a belligerently drunk, 5 ft 3, 100 pound 20 year old in a strange country going off to a random guys hotel room. I texted her to please come back to the hotel. I stayed awake waiting for her. When she got back at like 6 o'clock in the morning she shouted at me telling me she's a grown woman and can make her own decisions and I need to stop telling her what to do. I went back to bed and heard her sobbing in the bathroom. She didn't talk to me for weeks after we got back from England. I thought she would say happy birthday to me at least, but she didn't. I messaged her on my birthday and asked her what I had done and why she wouldn't speak to me. She turned it around on me, claiming I was the one who wouldn't speak to her even though I had tried. After a number of long paragraphs were exchanged, she stopped replying. We never spoke again. That was nearly a year ago. Looking back, I believe she was terribly depressed but needed a scapegoat and someone to blame. Instead of being justifiably angry at the man who abused her, she took it out on me, the person who was there for her through everything. I miss her so much and I wish I could talk to her again, but it's quite obvious that she hates me now and I don't know why.