Complex sentence: Feeling guilty about her deception and concerned for the Flanders' safety, Marge goes to check on them at their new house, and she tells them the truth about the murders, but they are not annoyed.
Split into simpler sentences: Feeling guilty about her deception and concerned for the Flanders' safety, Marge goes to check on them at their new house. There, she tells them the truth about the murders, but they are not annoyed.