@VictoriaNovotny I'm sorry, but I would rather that you didn't use my character. In fact most fantic writers do feel very possessive about their characters. Of course we don't own Harry Potter, but we often feel attatched to the one person we made.
Thank you for asking, I feel thrilled that you would want to use Jenny, but as I haven't finished her story yet myself, I am not willing to let you have her.
But I wish you good luck with your fanfiction.