Complex sentence: Discovering them sleeping in the same bed one morning, the grandmother smashes Cathy's ballerina music box, given to her by her deceased father, and after she discovers the two innocently talking while Cathy is bathing, she calls them sinners.
Split into simpler sentences: Discovering them sleeping in the same bed one morning, the grandmother smashes Cathy's ballerina music box, given to her by her deceased father. After Olivia later discovers the two innocently talking while Cathy is bathing, she calls them sinners.