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.
Crowning Moment of Heartwarming: Yes, there actually is one in this book, when Prince Ossin follows her once he's learned what's happened to her and tells her he loves her no matter what—he says that he "[had seen] the scars you wear, and I accept that you bear them, and will always bear them."
Nightmare Fuel: Plenty, but the Queen's portrait is an in-universe example: the servants won't walk past it on their own, and it makes everyone in the room nervous. The artist who painted it almost lost his mind doing so.