Dancing on the Moon (1997)

Sinopsis

Madeline is 13 years old, as are her two friends, and nothing looks the same to her. Her sister is leaving to study medicine, and there's Freddy who's looking at her as no one has before. But she still doesn't want to become an adolescent. A tragic accident and the help of an eccentric aunt who just arrived in her life will help her to pass the barrier.