When Sophie gives David her business card the name says Sophie Griffiths. But they go by Griffith.
Sophie leaves David's house empty handed after the 'dance scene' but when she arrives at her grandmother's house next door she is holding her camera.
At dinner Brent tells Sophie she, "Hasn't even decorated for Christmas," but he's seeing her for the first time in a month at dinner.
When Sophie is looking at the Christmas photos on her laptop, the file names all start with "20190402_", suggesting that the photos were taken in April, not in December.