Too often in YA novels, characters are whittled down to a few archetypes and are written in just to provide something for the protagonist, and only exist for their benefit. Not so in Naggi's incredibly impressive debut, where each side character seems to exist as an individual worthy of being their own lead character, and the reader gleans more about the Nora (the protagonist and narrator) in her interactions with characters.
Nothing about Nora is explicit. Everything the reader is told about her--whether by Nora herself or any of the characters announcing their own reads of Nora--is tinged with their own observations, doubts, and biases: as much as any description of anyone in the real world. "Real" is the important word here, each character and interaction feels like it comes from an authentic place.
The best thing Too Much has going for it is the dialogue. Conversations flow well, move better, and although packed with asides and observations, aren't reduced to hand-holding for the reader. These comments by the narrator enhance the experience of each conversation; they don't force it in any direction.
If you like uncomfortably relatable situations, occasionally unreliable self-awareness, and dialogue sharper than the sting of a breakup from someone you swear you weren't into that much anyway, do yourself a favor and pick up Too Much today.