I give my therapist feedback all the time. She can't see my facial expressions and body language so she counts on me to say it. For example she asked me a question last week which I dodged, then asked it again this week.

I said "you cant see this but every time you ask that I cringe because I don't want to talk about it."

She said she thinks its important, can we make a deal to address it later? So we made a plan to bring it up in another month.

Without that direct feedback I imagine I'd be annoyed with her all the time - or she'd completely miss the mark.