In a lease w/roommate for our apt. she is moving, what will happen?

[Me]

My roommate and I signed a lease for a year , ending April 1 2011. She has been packing her things and being really sneaky. Today she started actually moving her things out. She has expressed to me the past 2 months she was really tight with money, but never once told me she was moving out. So most of her stuff is out and all of it is packed, but she won't even tell me she's going. She is 32(i'm 25) years old and can't even talk to me. So if she moves there is no way I can afford to live here on my own. I live in a bad area and the apartments aren't very good, so I don't know anyone who would be willing to move in with me. What should I do. Will it look bad on me tobecause she is breaking her part of the lease? I have places I can go and move to , thats not an issue, but I don't want to break the lease and ruin my rental history.Any advice would be greatly appricated