That's a tough one.

It's hard to know what the best thing would be for you... but I think if it were me I'd try my hardest to Do The Brave Thing and send an email asking if she could do therapy with me again. I think I'd also put in the email that I felt really nervous about asking her, and that I was really afraid of rejection--not to try to guilt her into doing something she doesn't want to do, but so that if she did have to say no for whatever reason, she would know how vulnerable I was feeling and would be sure to respond with extra compassion.

She might have to say no because dual relationships are not supposed to be good for therapists and their clients... though I don't know if being someone's teacher really counts as a dual relationship. There's a lot of room for interpretation regarding boundaries/ethics in therapy, which is what makes this kind of thing hard to deal with (and makes it hard to predict what any particular T might choose to do).

Asking her is a risk--if she does have to say no, it'd likely feel bad (disappointment or even rejection, even if she has a really good reason why she can't see you)... but even though it might feel like she's the only person who could help you, that usually isn't the case (at least not in my experience, and I've heard lots of anecdotal evidence to support this). So maybe she could say no and help you find someone else, which would also be a win.

Hang in there <3