Yeah, I actually thought about you reading SP's post... I'm sorry she didn't.

My mind would immediately go to it's-negative-so-she-doesn't-want-to-tell-me too. However, I think Ts got it different- they should tell clients things that will upset them if they think the clients will benefit from them. It's not about sparing our feelings (as a friend might). Therapy should help us reach our goals. So I truly believe that she meant it when she said (she thinks) it's not important. Though she's entitled to keep it to herself I'd still bring it up again, explain why you'd want to know (specifics) and that it makes you feel she just doesn't want to say no/disappoint you.