Yes, I've written her both a letter to read in session and emails that I'd sent earlier.

She asked me to cut it out.

All of it.

Likely because they were all angry rants?

Or she didn't like my writing style (I don't blame her -- I do tend to be needlessly verbose and she is a rather slow reader)?

Dunno

In your situation, I would check out other Ts -- tell this T that you'll come back in a bit. Give yourself some breathing room.