Errors in geography
Incorrectly regarded as goofs
Miranda says she was 16 years old when she gave birth to Kristin, so their age difference should be 16 years. Character ages are not specified in the film, but Julia Roberts is 23 years older than Britt Robertson, which is almost a 50% discrepancy. It's common for an actor's age not to match his/her character's age. Sometimes actors are younger that the actors playing their characters' children.