R - I forgot what I posted last night but it sounds like you handled yourself well. With that said there is no reason to do this again moving forward until you know OM is gone and she is 100% ready to commit back to the MR.
It sounds like your dogs are your kids........that being said my W never comes over to my house to just hang out with the kids. She picks them up and takes them places.....I understand there is a difference but why does she have to hang out in the house? Can the dog go for a car ride? Can the dog go to a park? Can the dog go for a walk? Can she pick it up for the night?