Yes, I talked about this in my therapy.

And, yes, this is something you not only can but SHOULD talk about with the therapist because therapy is exactly for that - for discussing anything and everything you want to discuss, anything that feels important to you, and ESPECIALLY anything that bothers you and makes you suffer.

If you can't talk with the therapist about any of the above, then what's the point of therapy then? To have a polite exchange about weather? Or to catch up on current events? If you don't use therapy time to discuss all you need to discuss then your time and money will be wasted.

How would the therapist react and deal with it? Hopefully, professionally and humanely (and there is no contradiction between those two). And, hopefully, whatever she does would be helpful to you. You will never be able to know in advance how the T would react and what she would do with what you tell her. But not telling her doesn't make any sense because it contradicts the premise of therapy.