When Hope is having the 'Last Supper' with the Westmans before they leave, Lindsay offers her more salad and reaches for the salad bowl with both hands. Lindsay is then shown from another angle and her hands are still in front of her and then she reaches for the salad bowl again.
In one of the "Plot Summaries" here there is a reference to "14-year-old daughter Lindsay". In the movie itself Lindsay is referred to multiple times as being 12 years old.