Andi Through the Multiverse - Poconos Life, #7

Abused by her brother as a teenager, rescued from human traffickers, Andi Maggiore had built a brand now life for herself. She had joined the Army, gone to Afghanistan as a flight medic, and had gotten her nursing degree when she got back. Thoroughly ashamed of herself for her teenage years, torn with guilt because she had been rescued and her best friend Janie hadn't, she had sworn off men, regardless of how much she missed her old sweetheart Elliott Collins.
Then her brother died. Andi went home for the funeral. On the turnpike she got a speeding ticket. Over lunch with her old friend Crystal, she met Elliott again. From that point things just got weird. Heisenberg wasn't certain, but he was pretty sure that Occam's Cleaver chopped off the tail of Schroedinger's Cat, who was either alive or dead, male or female, pregnant or not with kittens at the time.
Andi and Elliott discovered her talent for slipping from universe to parallel universe without even needing a Flux Capacitor or an Einstein-Rosen Bridge. With the help of a few more of themselves, they set out to rescue Janie, break up the trafficking ring, and even patch up the broken heart of The Widow Andi.