Three's a krowd / Thorpe, Kiki

Polly, having been befriended by the snottiest girl in school, Denise Dunleavy, worries that Denise will find out about her supernatural stepfamily and tries to find a way to cure Denise's crush on her stepbrother.

The snootiest girl in 5th grade gets a crush on Polly's stepbrother Vincent and keeps coming over to their house.