I think many T's balk at therapy thorugh email, since a lot can be misconstrued. At least she responded. I know with T's that allowed email, the more emotionally charged emails I sent got less of a response than the "safer" ones. There's more potential for misinterpretation when our emotions are highly activated...

Would a phone call be appropriate for support? Or perhaps an extra session or two?

Also, trust can be slippry and elusive sometimes (even if it was there before). I panic around trusting a T with new and "scary" information, even when I had built up trust around other things previously. For me, it seems to need building with each new disclosure (mine also tend to start pretty tame and lead up for the more shammeful stuff).

I hope you can talk to T about all this, and maybe get some reassurance that she is still there and still trustworthy.