Sweet Damnation (The Devil's Aegis #1)
"He's the devil, but I am no angel.
I have my faults and he has his sins.
Hell may come with torture,
but if damnation is this sweet,
I'll take it."
Samantha Hayes, the only survivor of a freak accident, is left with a contract with the devil in exchange for her life. The terms made her into the devil's aegis--his protector, his connection, and perhaps something more.