Don't Look Back — Jodi Compton

Having defied a powerful mobster to protect a pregnant teenager, army dropout Hailey Cain has found herself on the wrong side of the law and is now in LA, second-in-command to her high school best friend turned rising gangster Serena 'Warchild' Delgadillo. Hailey is just beginning to settle into her unconventional new way of life when it is suddenly and violently overturned. A murder has been committed, and all fingers are pointing at her. Only Hailey herself, and the all-girl gang to which she belongs, know that this is a case of stolen identity with ruthless and dangerous motives. But how can they prove this, given that she'll be arrested as soon as she steps forward? Hailey must go on the run once more, risking her life to reclaim her name and chase down the murderer who has taken it...