I would recommend Stay for a Spell by Amy Coombe for this quest and/or anyone who would like to live in a magic bookstore.

A princess is cursed to be trapped in a bookshop (oh no! 😀😀😀) and her parents start sending along princes in an effort to break the curse (actually oh no). The main character was highly relatable, the side characters were delightful, and there’s a sweet romance in there as well.

I'm finding the flashbacks to the boys memories with their grandfather to be really interesting. In particular, how the way his actions are described seems to differ immensely from how they are received and reflected upon. E.g., in this scene like many others, where he speaks softly and neutrally, but his statements are received "like a blow." I wonder how much of his impact on the boys was intentional