Okay okay okay...BG, you win. It was nice of you to wait on dinner.
I think the good thing about what you did vis a vis the baby...is it showed OW that you know everything that's going on, if she calls H with baby problems, you are right there in the big ole middle of the sitch, and know more than EITHER of them about how to take care of one. So it sort of takes her edge away there. If she thought she was in control of the situation that way...she found out she wasn't last night.
And S got properly taken care of so that's important too.
Maybe buy her a case of baby wipes and then she won't run out at dinner time again...