Seventh grave and no body - Darynda Jones

It's lucky number seven for Darynda Jones in her bestselling Charley Davidson series! Following up from Sixth Grave on the Edge, Charley's back and she's ready to reap . . .

Lead me not into temptation.
Follow me instead! I know a shortcut!
--T-shirt

Twelve. Twelve of the deadliest beasts ever forged in the fires of hell have escaped, and they want nothing more than to rip out Charley Davidson's jugular and serve her body to Satan for dinner. So there's that. But Charley has more on her plate than a mob of testy hellhounds. For one thing, her father has disappeared, and as she retraces his last steps she learns he was conducting an investigation of his own, one that has Charley questioning everything she's ever known about him. Add to that an ex-BFF who is haunting her night and day, a rash of suicides that has authorities baffled, and a drop-dead sexy fianc who has attracted the attentions of a local celebrity, and Charley is not having the best week of her life. But all of that barely scratches the surface of her problems . . .

Recent developments have forced her to become a responsible adult.
To conquer such a monumental task, she's decided to start small. Really small. She gets a pet. But how can she save the world against the forces of evil when she can't even keep a goldfish alive?

A tad north of hell, a hop, skip, and a jump past the realm of eternity is a little place called Earth, and Charley Davidson, grim reaper extraordinaire, is determined to do everything in her power to protect it.

We're doomed.