Sweetie,
I'm so sorry you're feeling this way and are so confused. I wish I had some advice to share with you to help you feel better.

From what I've read it sounds like you coped really well during your appt., so please give yourself kudos for this!
Guess one piece of advice does come to mind regarding your therapist. If you feel comfortable why not ask her to explain this disassociation and anything else you don't understand? Perhaps understanding this better will bring relief for you since you might then feel less confused. Dunno. Just a thought and a suggestion. Please only do what feels right for you.
Wishing you days of clarity, peace, and joy...
~*PositiveKarma*~