Complex sentence: After they had liberated some of the prisoners and butchered the demons responsible, Buffy decided to return to Sunnydale; leaving her waitress job at Helen's Kitchen, apartment and identity to Lily.
Split into simpler sentences: After they had liberated some of the prisoners and butchered the demons responsible, Buffy decided to return to Sunnydale. She left her waitress job at Helen's Kitchen, apartment and identity to Lily.