A previous reader is correct: When Kinsey first meets Anica, she's fresh from a shower, and Crystal is just then showering. Add that Anica works at an all-girls school (admittedly equivocal), and Crystal is insistent on Leila spending the night at her step-father's, perhaps to give A&C a weekend alone.

The clincher, such as it is, comes at the end of the book. {Spoiler removed}

As I read in a review somewhere, there are no likable characters in this book, possibly excepting the doctor, and then only if he was not involved in the fraud at all.