Sympathy for the Devil — Holly Lisle

Nurse Dayne Kuttner puts her soul on the line to bargain with God for amnesty for Hell's damned.  But when God not only listens, but takes the deal she offers literally, her world turns upside-down.

Plagued by pushy reporters, devilish doctors, desperate colleagues, bewildered friends, an imp named Earwax, and pursued by the Netherworld's  hottest guy, Dayne stands her ground...and pushes Heaven itself for an accounting of how love and Hell can coexist.