Tammy, when I had my first baby, I was pretty overwhelmed and exhausted. I cut my hair shorter too. I just didn't have time to keep it up. Plus, when baby gets to be a certain age, they start pulling on your hair and think it is a great delight. I've known lots of women who wore their hair shorter in the first couple of years of babyhood. Along those same lines, if your T used to color her hair blonde, she could just be letting it revert to its natural dark color for the same reason--because she's tired and wants to save time and hassle.

That explanation might work for the hair, but it doesn't explain what your T has become more formal in session.

I think you should just ask your T. At my last session, I noticed my T had started to grow a beard, and I asked him about it immediately. He was happy to talk about it.