I still don't understand neighbor Jean's reaction....
...when Sarah comes back from her weekend with Brad. When Sarah walks in, Jean is friendly and warm. Sarah doesn't say or do anything to indicate that she was up to no good during the weekend.
They talk and for some reason, at some point in their conversation, Jean suddenly becomes cold and hostile toward Sarah. Why the change? It's not like Sarah accidentally said or did anything to indicate her transgression. Within one minute, Jean went from cheery and sweet to cold. WHY??