Sadistically Sweet
Sybella Ciscra was a young girl of 5 years old when her parents tried to kill her forcing her hand to make her kill them first. But, after the fact, she felt sadistically sweet doing it. So after deciding that she felt good when doing it, she figured 'what harm could happen to me if i keep doing it'?
Well, later she figured out that a lot of harm could happen to her. By the ripe age of 8, a victim had done quite some damage to her. After murdering the victim by slitting his throat and stabbing him in his left eye (her signature) she laid herself out beside him to bleed out.
What felt like minutes later she opened her eyes and looked around seeing flames everywhere, looking around and seeing demonic creatures she used her brain cells and figured this was hell.
After wandering for awhile she saw an ad for demons who wanted to redeem themselves, the ad mentioning free shelter and food was enough to close the deal for Sybella.
Once arriving at the hotel she knocks on the door, a tall blonde doll-like girl opened the door looking down and seeing a short young girl around 8 years old was concerning enough for Charlie to immediately let the girl in.
Charlie questioned the girl on how she died and got into hell, Sybella told her the story and to say the least, Charlie was horrified. Alastor however, who had been eavesdropping, was intrigued.
Alastor had taken Sybella under his wing, teaching her how to survive in hell and how to make people scared of her. Which, surprisingly, she didn't need help with the latter. I guess being so sadistically sweet can really help when you're in hell, huh?