As anticipated, Mark's early return has thrown a wrench in Patty's confession plans, and now all she can do is wait for Mark and Cherry to reclaim their respective jawlines and exchange pleasantries with the rest of the family. Mark's face in panel two suggests that he may have walked away with a little more chin than he brought to the hug; it's a problem that will take presidence over all non-face-related issues this morning.
Patty is one mea cupla over the standard apology limit for this situation -- whatever she's done is seriously eating away at her conscience. In no way does that excuse her grating pleas for atonement. I'm just saying, it's bad.