That's deranged
Usually when you see someone die in a scary movie, it's because they deserve it. A lot of times, that person was just unkind. This was a rather nasty subversion, because it seems like any person would turn out like this. So what's the moral? Always have candy on you no matter what time of year it is or at least if it's close to Halloween? Then again, this was probably just a scary thing featuring a truly psychotic character.
Wait, this was featured as "Comedy"?! I guess it might be played for laughs because it really is quite ridiculous when you get down to it. A girl turns into a monster because she's mad at a woman for not giving her candy in September and for being mad when she's in her house. At least we can all agree candy is good. I wonder what's going to happen to her casserole?