How does this sound?
Carmen: Originally human. One of Leviathan's best friends. At the age of 17, her parents were killed in an armed mugging. She spent the next month searching for the killer, eventually finding them and managing to tie them to a jetski in order to drown them in a lake. However, her 'victim' was able to knock her off, and although they were dragged out into the water by the jetski, Carmen slammed her head into a sharp rock on the shore as she fell, killing her instantly, her sin being (albeit kinda justified) wrath. She woke up in Hell, her new features displaying both her personality and how she dispatched her victim. She has great hacking and computer skills, as well as general information gathering that rivals an entire intelligence administration. She met Leviathan one time while she was infiltrating a secure research facility on a dare and the two have since become close friends. She currently works as Leviathan's sort of 'secret service', ensuring that the coast is as clear as possible from a distance, and also doubles as Lucifuge's director of intelligence.
