Revealing mistake: The scene where Jackie takes Anna for a night ride in the snow is special for several reasons: Even though it's the first snow of the year and no earlier scene made the impression that it is particularly cold, they come by a lake that's half covered with ice. Both don't wear gloves (horse riders usually wear gloves even in summer!), and, in spite of the cold night, their breath doesn't make any clouds.
Continuity mistake: The stone pillars in the middle of the arched windows of Luke's and Isabel's apartment is only visible from outside, not from inside, e.g. in the scene where Isabel helps Anna with her painting. In the scene where Ben calls his mom in hospital there are even two stone pillars.