The Iron Fist — Kristina Circelli

When one of their own was murdered, everyone feared it would be the end to the Helping Hands. But as they are now learning, the real difficulty lies not in mourning the loss of a friend, but in protecting the project that took his life.
Kelly Mitchell is dedicated to just one thing - protecting her little sister from their stepfather's wrath. When her family moves to San Francisco, she struggles to keep her home life a secret, avoiding the charms of her neighbor, Robbie Anderson. But when her stepfather sets her up and sends her to a juvenile detention camp, Kelly will attain her own protection in the service of Melanie O'Conner.
Forcing herself back into society as a reformed rebel, Melanie finds herself surrounded by a life filled with friends, security, and family. But the illusion of a life without disaster is shattered upon the discovery of a new, unplanned gang of Helping Hands, and two cops threatening to put her back in prison.
When faced with the copycat gang that brings the FBI to her front door, when Kelly and her sister plead for an escape from the iron fist of their abusive stepfather, when Tyler lands in the hospital and faces death, Melanie must decide which is more important - having a normal life away from the burdens of her past, or protecting the project that granted her that life.
Whatever choice she makes, someone must suffer the consequences.