I can try my best, do you possibly have a reference sheet, and a pose you would like your character to be in?
Thank you. Sybil's description is located here: https://moronicarts.com/cast-of-characters/
I would be happy if you drew her any way that came to mind. Maybe illustrate a scene from a story?
Please draw whatever you like, I would just be happy for the fan art. If you would rather draw a different character instead I would be happy.