I agree with googley, zoo. And I think it may be coming up again for you because my thread was triggering. Sorry about that.

I'm sure T will understand, though, that the same fear was triggered again, and that you need the same reassurances she gave you a week or two ago. Sooner or later they'll stick.
I think your plan is a good one. I hope you are able to find the courage to give the email to T, zoo. I think there is a lot of healing work that could be done with the feelings this is bringing up.