|This needs a stretch.|
She has black hair and she is not very tall.
She didn't do a good job at keeping secrets.
She was working on research with Dr. Horace Goodbine, but he thought she was a poor security risk so he had her drive the van to fetch people and things like macadamia nut treats. Resentment over this could have led her to become the Witch Doctor, but she turned out to be innocent. (Scooby-Doo! and the Witch Doctor)