"Sarah's choice at the end of the film was the most compelling aspect of her character for me when I first read the script," said Schilling by email. "Her maternal instinct grew into pure ferocity...but maybe that's a result of the choices she makes. She is losing her family, so I don't think any of her choices are completely logical or rational. She is in this fugue state based solely on survival: The survival of her husband, the survival of her son, and the survival of her family as a whole."

Source: Los Angeles Times February 09, 2019 20:26 UTC