Susan's new job means she can no longer stay home with MJ, but she's not happy to see Katherine babysitting her son when Mike was supposed to supply the kiddo-sitting service. We can't blame her for being jealous, yet we have to admit she's crossed a line when she tells Katherine that MJ is no longer allowed at her house. "That's going to be tricky," Katherine replies. "Mike's moving in here." oh, SNAP.