hmm, I wouldn't put off a discussion till 'the next time' she pulls something like this off... it's maybe good to be well-prepared for it though (I posted more in your other thread)

When I was in the students' dorm, we had written rotating duty of who does what in the common areas etc. It was really cool and helpful. Not sure how doable it is with your illness and her busyness, some sort of agreement would probably be good...