Libby, Now that you have expressed your thoughts/feelings, let it go. This is now his problem, turn it completely over to him and allow him to do whatever is necessary to deal w/the ow. I wouldn't raise the issue w/him again, unless she does it again.
It's okay, you had to vent, now do something constructive, like a movie or bubblebath this evening.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.