Dealing with a carping coach

[Lotto]

One of the local girls modified (junior high school) coaches is constantly carping out loud with the usual stuff---"I can't ever get a call," etc. (At the last game I had with her, she complained to my partner about the fouls being 4-2, not realizing that it was the opponents that had 4 and that her team had 2!) None of the individual comments are profane or personal enough to get any kind of attention, but cumulatively, it's too much. My question: what's the best way to deal with this? I have her again in a week or two and I want to have a game plan.

Thanks!