User blog comment:Littlegoodboy/Gravity falls script/@comment-5539085-20121226023730

Jenny: (Her real name is Jennifer, but some people call her Jennifer, Jen or Jenny. Mostly Jenny) A 13 year old girl who just moved to Gravity Falls from New York City. Her mom & dad got divorced when she was 6. And lives with her mom. Her dad still lives in N.Y.C. She has a black standard poodle named Midnight. After moving she wants to make some money so she gets a job at the Mystery Shack. But she has a secret... A secret that not even her mom knows.

I don't really know what her secret would be. You could make it up though. I was thinking that she could be a shape shifter, or a mermaid? IDK.