During the holdup of the wagon full of gold, the woman is shot in the left shoulder. Yet in several later scenes, her bare shoulder is shown with no trace of the injury that should have left a significant visible scar.
The man whom finds the baby almost bite by a rattler, says he has to give his mom a proper burial since she's dead, but when it cuts to him burying her with a shovel, you can clearly see she's still breathing, as the actress' breath is raising the sand up and down with her chest.