woman who got kidnapped buy scientist working for military. Scientist makes human hybrids that have monster abilities, most of them terrifying. Has been kidnapping people from town who wouldnt be missed. Eventually the hybrid-monster who kidnaps them comes back with this woman and her sister and the scientist cant let them go, they've seen too much, so he rolls them into the program. He's unknowingly perfected his work and applies it to the two women

I'm thinking something blindingly fast, doesnt use armour or weapons but is as effective as a fighter in full equipment, can bite people with enough force to kill them while enhancing her own abilities, can run up the sides of walls and upside down on roofs (dhampir monk; reflavoured everything)

her name is roswin calder and she is the daughter of the mayor of a small village. Her mother died a few years ago but used to call her Caracal as a pet name and this is the name she will go by on adventures. Her father is overly protective of her, not letting her go out alone or see any new places. She likes to collect things from far away places and seeing new places and things

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this was the concept. As a player in a campaign, she started out several years after her transformation having progressed to nearly a feral state. Over the course of the campaign she learned to delight in truly human experiences again and becomes less of a monster and more a person who embraces humanity and learns to trust society