I agree with P7, therapists are not supposed to leave I'm sure you have already thought about this but is there anyone else at the center that you think you talk to?
When I was in grad school I started working with a therapist and after about 5 sessions we realized our schedules were not compatible. I was in rough shape met with the director to find out who else had some knowledge in what I was dealing with. He ended up working with me (a professor called and asked him to make time) but had he not, I know he would have suggested someone else. Do you think that it would be possible to do this? Can you call your other therapist and ask who she would recommend or just ask some people there.
I hope that you are doing better, I know it's rough and I can't imagine going through it without a therapist.