Poisoned Rose (Dark Roses #1) by Nathalie Saade

In the criminal world of Los Angeles, five Families must fight a deadly war to retain what is theirs. Within these Families exist women soldiers, warriors whose names alone ignite fear in their male counterparts. Desperate to join this world, Aurora Hannam must prove she has what it takes to become a Rose.

The daughter of a boss, Aurora has been kept on the sidelines of her father’s business. But when attackers rob her of loved ones, rage fuels her desire for revenge and she sets out to convince her family she is worthy. Her unrequited love for a childhood friend has left her heart empty, but once she ventures down the path of no return, she finds she may have been wrong her whole life.

Hawk Mason, a captain in his father’s Family, is haunted by his past. Known for his brutality, he is feared across the entire nation, but inside he is damaged to the brink of self destruction. He believes he cannot be saved, until the woman he has loved since birth enters his world.