I do recall reading another story where Star was also the killer but she wasn't doing it willingly. Somebody else was taking over her mind and it took her awhile to realize what was happening to her. I have no ideas who the author was or the name of the story or really much else about the plot.
This was from the TUFS series
To Catch A Falling Star by Beth Washington. She gets possessed by Jack the Ripper if I remember correctly. (Been too long since I've read it)
