Given the strained and perilous relationship I have with my own mother, I have a lot of admiration for any mother-daughter pair that get along well enough to successfully negotiate the writing of a novel. That said, Fed Up could have been a lot better than it was.
I give the authors points for creating a strong and opinionated female character, Chloe, who solves the mystery of a poisoned woman on her own through a rough mixture of luck and logic.