Although Gruadh is not pregnant with his child, Macbeth sees her baby as his responsibility. He also cares about the wellbeing of his wife and does not want her to suffer and possibly die. Catriona uses Celtic magic and superstition to help speed the birth, but most importantly she has the medical expertise to safely deliver the child. Flooded with endorphins, and grateful that he helped save her life, Gruadh softens towards Macbeth even more.