I have done some thinking about the best environments for students suffering from depression and anxiety, and it seems to me that a smaller LAC (Amherst, but not high-pressure Swarthmore?) would be very beneficial. There, many adults *know* the student and the pressures they are under and can help them see early signs to avoid relapsing.
What a terrible story. That's what happened to me too. I used to go to a good college and then they made me take a leave of absence because I was suicidal. Now they're forcing me to transfer, and I have no idea what to write in that "why transfer" essay. Maybe I'll have to make something up.