These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Dementia 13
Jerkass Woobie: John has hints of this before he dies. After he dies and we're forced to accept Louise as our main character, he becomes this.
Moral Event Horizon: If her hiding her husband's corpse in the lake and pretending he's gone on a business trip in order not to lose the inheritance wasn't this for Louise, her plan to pretend to be Kathleen's ghost in order to gain said inheritance was. You'll most likely be cheering when Billy kills her!