Complex sentence: She is unsure of what to do until she sees him helping Emily relearn how to walk; she sees that he truly loves her and her family, and marries him the following day after making a full confession to her parish priest.
Split into simpler sentences: She is unsure of what to do until she sees him helping Emily relearn how to walk, and realizes that he truly loves her and her family. She marries him the following day after making a full confession to her parish priest.