Yup. And in my case it was pretty bad mistakes that didn't impact just therapy but my life (and still are).

I tell them when they screwed up at lower levels too (but if it's something like they forgot I hate parsnips, I let that pass). And DBC I tell in advance of her actually screwing anything up. No wonder she loves me so.

I don't see why you wouldn't tell. Una's right, it's about navigating life, not therapy. Life won't always be as kind as the therapist, but sticking up for yourself is never the wrong thing to do.