Around Here....

An alien infiltrator has been sent on a solo mission to Earth to burn  human civilization to the ground and commit mass genocide...then decides not to, and uses her training and god-like powers to become a vigilante. She is then joined by her sister, who take on the moniker Lily, and later their friend Pink. Things seem fine until disapproving adults with their own agendas catch wind of their activities. A hard-hitting book that's refreshingly absent of tropes like "the aliens know English" or "attractive people are good people".