She wasn't going to give you anything? Shouldn't she be giving you 'something' as your therapist? If not, what do you pay her for?
Of course, it's an unusual request and she has every right to say no, but referring to boundaries is quite pathetic. This is not about boundaries.

You asked a question, she said no. That's all there is. Even if that question would be (for example) a too personal one... I don't think it's ever wrong to ask questions if they don't have the intention to hurt and you feel like the answer could support you. Yours clearly was one of those.

I feel sorry for you.