Complex sentence: But Frank and his family have their dignity restored, thanks to the duchess' fantastic opera singing, and with the help of a drunken sea captain, Monsieur Bonaventure, sails set for England and all ends well.
Split into simpler sentences: But Frank and his family have their dignity restored, thanks to the duchess' fantastic opera singing. And with the help of a drunken sea captain, Monsieur Bonaventure, sails set for England and all ends well.