She is the daughter of Paul Grogan who has divorced her mother and left her with him. She is in the summer camp at the river while his father is at home during vacation. She hates being in the water and stays away from it. She overcomes her fears and manages to save one of the supervisors, when the piranhas come and attack them and the children in the river.
She is later standing by her father, when he is treated because of his wounds caused by the piranhas after he killed them.