According to Greta

Greta is a movie starring Hilary Duff, Evan Ross, and Michael Murphy. A suicidal and rebellious teenager is sent to live with her grandparents for the summer, where life takes an unexpected turn.
Dumped on her grandparents for the summer by her indifferent mother, acerbic and self-destructive teenager Greta disrupts the elderly couple's staid life on the Jersey Shore. Eventually, a romance helps Greta face down her demons.