Complex sentence: One of the victims, 18-year-old Maxine Hambleton, had only gone into the "Tavern in the Town" to hand out tickets to friends for a party.
Split into simpler sentences: One of the victims, 18-year-old Maxine Hambleton, had not been a customer. She had just gone into the "Tavern in the Town" to hand out tickets to friends for a party.