I've got a player who's PC backstory is rich with opportunities. Instead of starting from the beginning, childhood and such, her story begins with her becoming aware in a bunraku parlor, surrounded by slaughtered Yaks with her covered in they're blood. She has no memory previous to this. A fixer receives an anonymous message to facilitate her escape from the situation (for a hefty sum, natch). Afterwards he sets her up to be a prostitute, for a lack of a better idea and he's a bit of a perv.
Later another fixer that deals only with wetwork receives an anonymous message to start assigning jobs to her. Through these assassination jobs, the PC learns of her combat skill, and eventually takes to running.
The character has a false face, skin toner, and changing breast implants. She changes appearance based on the situation's need, but has no recollection of what she actually looks like. Her only working memories start from "waking up" at the parlor.
I'm asking y'all for some ideas for what mysterious force(s)/plots would be interesting and intriguing to unfold her past through game play.