I don't think you have irritated her with your difficulties expressing yourself; in "this" instance, you did not tell her everything. That is a discrete difficulty you can work on if you want, asking yourself "have I told her the whole story?" and thinking ahead to make sure you have the "correct" beginning, middle, end to what you are saying.

I have difficulty expressing myself and my husband will often pipe up with, "I don't hear any nouns!" and I stop, back up, get the whole sentence arranged in correct order in my head (with noun(s) :-) and then try again. My T was amazed that I did not resent my husband saying that and hopefully asked, "Can I use that expression?"

The second irritation was about you not checking out what you heard, that it was what she meant/was actually saying. Tell me it is the first time you've not done that Heck, I'm guilty all the time but I'm getting better at it because I know I'm doing it and I'm working on it!

So it pops up again if you get "careless" and forget. Be grateful for the sand you are, the irritation, we're busy making a pearl here! The oyster doesn't get rid of the sand, the irritation, does it? No, it helps make the pearl. The T is the oyster.