Pranksta Rap

How come Marge never made an appearance throughout the rest of this episode after Bart had been "found"? We never get to hear her side of the story afterwards, neither does Lisa try to "expose" the truth to Marge! (instead she tried to with Homer, which failed miserably) Something fishy is going on here, and I would not consider it to be a good thing, as it seems as though the writers of this episode were trying a bit TOO hard to come up with their desired conclusion and leave out stuff that would be logical. You can't just end the episode like this without any sort of disclosure about Marge's side of the story!