Kathy's original theory
I have not read the book, so I don't know whether or not this was a touch added in the film, but I just viewed it for the third time and think I might've picked up on a detail (don't know if this has been brought up). Obviously this could also be a coincidence/reading too much into it.
I think near the end of the film, when they're outside after they meet about the deferral, one of the ladies comes out of the house, and touches Kathy's cheek and says "You poor creatures, wish there was something we could do to help you" or something like that.
The lady has a striking resemblance to Kathy. Haircut, dirty blonde hair, similar facial structure.
thoughts?