Jane the Killer is another fictional character that follows the previously written story of Jeff the Killer. In most descriptions of the story, Jane was a neighbor to Jeff and ended up one of his victims when he went on a killing spree in his own town. It is said that he lit her house on fire and she was able to escape, but not without burn wounds all over her body. She swore it as her mission to find Jeffrey and take her revenge on him, but in many fanon adaptations, they live together in the "Slender Mansion." Their rivalry continues but she does not kill him by the demand of Slenderman. For more information on Jane the Killer, here is a wiki page link:

https://creepypastafiles.fandom.com/wiki/Jane_the_Killer

Ideally, I would like for her voice to sound mature and somewhat warm, but also often having a sarcastic tone.