Lisa ... looks like you are on the right track. I had a similar issue recently .. went out to dinner with some old friends of mine ... nothing at all but catching up and dinner, just so happened all 3 of these friends were women. WAW was not happy, in fact she was very upset that I was out with 3 women... regardless of the relationship... like you I was WTF I did not say IDLY nor did I sleep with any of these women and shove your face in it. She was upset I went on a "date" with them .... I simply validated, told her I was sorry she felt that way (At the same time this was a great GAL moment for her to see I was moving on with my life) ... this .. like your sitch most likely confused the WAS... and that's what we are trying to do here, make them think about it, your H was not ready to see that ... accident or not ... and those emotions mean something ... if he was 100% checked out her would have shrugged it off and went about his day.
Stay positive, be mysterious, GAL .. 180 your tail off.