Does not caring any more make me a bad person?

I have this friend that has been going through some tough times for the past like year. She calls, texts, IMs me, or facebook messages me more than 10 times a day complaining about her day or telling me some small little thing that happened that made her day worse. I feel that most of the time she just does it for the attention I'll give her. And if I don't give her the attention she wants she gets even more upset and puts herself down. Last month she almost killed herself and I had to talk her out of it over the phonebecausee she goes to school two states away. Over the past two months its gotten a lot worse. I feel that if I justignorer her or tell her that she needs to get over herself, which I'm starting to think the answer is, she'll just try to kill herself again. Over these two months I've started not to care anymore. Does this make me a bad friend or person for that matter?