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.
The Woobie: Joan. Alice demonizes her in all her fantasies, and there's nothing to suggest that Joan deserves any of this, other than simply being the woman that Alice's dad loves and wants to marry. One image that really hits home for many stepparents is when they're in the car Alice doesn't want anything to do with her.
Alice herself - it's not hard to assume that her relationship with Joan is in part a Freudian Excuse, since her first stepmother died, and she developed her Cloud Cuckoolander tendencies to cope with the sadness.