No Love Left Behind by Jenni M Rose

Mercedes Charles was horrible. Spoiled, rich, and entitled, the world, and everyone in it, was hers to use and throw away.
Until one moment changed her life forever.
Seven years and one felony prison sentence later, Mercedes is nothing more than a bad memory and in her place lives Sadie; a down-to-earth dog trainer who wants nothing more than to live in the country with her best friends, her dogs, and pretend her old life doesn’t exist.
But her brother has other plans, and when he sends his best friend and Sadie’s girlhood crush, Lincoln Greene, to her house with a big, dopey dog in tow asking for her expert help, she knows she should say no.
Lincoln is neck deep in her old life and everything she’s tried to distance herself from since being released from prison. He’s one-quarter of the infamous Boston Billionaire’s Club.

Mostly, he’s everything she’s ever wanted but could never have.
Lincoln always had a thing for Mercedes. A thing he could never explain because she was, for all intents and purposes, a terrible human being. But one conversation with Sadie and he finally gets a glimpse of the heart and soul that’s always lurked behind those dark eyes.
As she lets him in, little by little, everything clicks into place and it becomes clear that Lincoln might just be the one person that sees Sadie for who she is, not who she was.
But the scars from her past run deep and there’s someone out there that believes Sadie hasn’t paid nearly enough for her crimes.
And they’re willing to go to any lengths to make sure she pays.