Hi there kant! Good to see ya!
What was different huh... Could be the company, the bad chit, the fight the previous weekend---? I know Misty had a lot of babysitting experience but had she ever been a full time live in babysitter for her boyfriend's kids before? It's a bit different babysitting for your brothers and their wives a few hours every once in a while when you know both of their parents will come home at the end of the day and the kids will be out of your hands, compared to when you live with the kids 24/7, they belong to your boyfriend and you are expected to take on some kind of maternal role step into the stepmother's boots. When the daddy works nights nobody will come and save you at the end of the day, it's all yours. RC working the nightshift was a new development, and the rumor has it she had some trouble getting the children to comply.
But Granny wasn't there so what does she know about it? If Misty complained to her over the phone (and mind you, Misty strikes me as a person who complains about things over the phone) she might have had good insight though, and sometimes grannies are quite good catching those things that aren't said as well.