Oh Sweepy

I can totally see why you would feel as you do. ANd I agree with others, she may not be leaving but is being reserved because of the challenges with the others at the practice?
Also, I wanted to say....trust your instinct. If you feel she is being evasive and want to know, then tell her and ask if this is the case. I know that is hard to do! I did with my T, and my instincts were correct....I got my answers and it helped knowing.
I truly hope you can get back to a regular, consistent and supportive T situation soon.