An experienced shooter like Emma would never allow a first-timer like Meryl to hold and fire a rifle as depicted in this film. By pressing her cheek against the side of the rifle while failing to secure the stock firmly with her shoulder, Meryl would likely have seriously injured herself as a result of the recoil produced by firing. This was demonstrated in the same scene when Paul injured his shoulder despite holding the rifle more correctly.
When the Morgans fly out of New York City, it is obviously bright daylight. However, when they arrive in Wyoming it seems to be twilight. Unless the jet is very slow or they had a layover, this is impossible. New York City is in the Eastern Time Zone and Wyoming is in the Mountain Time Zone. Therefore, they would have GAINED 2 hours when flying toward the west. It should have still been bright daylight.
When Meryl leaves Paul early and he keeps on running and she heads back to the farm. While running she wears tight fitting grey leggings, but when she shows up in the barn she wears loose fitting sweatpants.
When Paul and Meryl are alone at the ranch after she talks with him at the rodeo dance, he's outside chopping wood. One camera angle shows him whacking at a round log with the axe, to no avail in splitting it. However, after Meryl walks outside the next camera angle shows he's splintered the log into 4ths or 5ths.