Though the main actress was really young I don’t think it changes anything. Actors are chosen for their acting not for their age. They probably choose her because they wanted her in this role. Yes they could’ve chosen someone older, like they could’ve chosen someone younger: it’s a role. If you’re disturbed by a love story at a young age, it’s okay, but they didn’t even kiss. Please don’t link the actor/actress and the role he/she plays. I actually didn’t knew she was 13 years old, it didn’t seemed like it.
If you wan’t a light movie (special) I recommend it