I have emailed my T very personal things on multiple occasions, that's not unusual with a lot of T's. Your T may have privacy concerns or may prefer phone calls, who knows, but you didn't do anything wrong, your T was unclear.

I can understand why it was upsetting. It seems to be pretty common for clients to worry about being "too much," so it's a hurtful thing if a T has to pull back on some kind of contact. It aggravates that worry that a lot of clients have. But it's actually up to her to manage things with all her clients so that they don't ever become "too much" for her, on the whole. It's not for you to have to worry about, it's for her to manage as part of her job.