I really think you should phone, I can see why you don't want to, but at least you will know.
If she doesn't write back and you don't phone you're going to feel like this longer, if you phone and she says No, at least you'll know why.
If you phone tomorrow and she says Yes

that will be great. So I think you should, you could be feeling way better.
I would miss my psychologist as well though - I did when she was gone 2 weeks.
Take Care