Factual error: Nonna knew the Australia (ie, Josie's real grandfather) in 1945 - the photograph is dated. Josie's mother was born from this union, and had Josie when she was 17. During the film, Josie herself is seventeen. About thirty-five years would have passed, then, making the present about 1980 or so. But it's quite clear (from the fashions, technology, streetscapes, dialogue, references, music, cars, etc, etc) that it's around 2000 or so, twenty years too late.
Continuity mistake: In the scene after Josie fights with Jacob and the two of them are outside his house, and his hands are on her face. When the camera is behind them and shows Jacob's face, his hands are over her hair, but when it switches to Josie's face, his hands are under.