Here "strong" represents "stubborn." A "strong face" means a stubborn expression on a person's face. This implies that the woman is acting in a stubborn way, that she is deliberately doing what she knows is wrong. AT: "with a shameless expression on her face" (See: [[rc://en/ta/man/translate/figs-idiom]] and [[rc://en/ta/man/translate/figs-metonymy]])
Here "vows" represents what the person promised to sacrifice to God. AT: "I made the sacrifices I promised to God" (See: [[rc://en/ta/man/translate/figs-metonymy]])
Here "face" represents the person and especially the person's presence. AT: "look for you" or "find out where you are" (See: [[rc://en/ta/man/translate/figs-synecdoche]])