Sounds like the hug was kind of long and beyond her comfort zone. I think many people would be uncomfortable with a hug that long -- I don't think it is particularly that unusual (therapist or not therapist); sometimes a hug just can go too long for many people. Sounds like she was just being honest with herself and with you. In other words, I don't think it was necessarily a reaction to "you" so much as a reaction to a really long hug. Then, coupled with your email and your recent depression and hypomania, and she may have read your situation incorrectly, wondering if you were still demonstrating some instability maybe? (Might be a reasonable but incorrect interpretation of the events).

I'm glad you're going to your session. Sounds like you realize you may have both been reading the situation differently and there was some misunderstanding/miscommunication on both ends perhaps. Hope you can get it cleared up. (Glad you are feeling better, btw.)