Heartthrob Vol. 2 Walk a Thin Line (comics)

Callie tried to go straight. She escaped both Mercer and the FBI to Canada. She got a new beau, a new job, and with the few years remaining on her borrowed heart, everything should be perfect. But Callie's old life isn't entirely done with her. As her old crew keeps robbing and sucks her back into the one thing she's great at, Callie sets out to create a criminal empire of her own.