Complex sentence: A week later the girl is sat on a park bench when suddenly Andrew turns up and sits next to her, they discuss vampires and Andrew calls Buffy who wants to talk to her but the girl hangs up and walks off.
Split into simpler sentences: A week later, the girl is sitting on a park bench when suddenly Andrew turns up and sits next to her. They discuss vampires and Andrew calls Buffy, who wants to talk to her, but the girl hangs up and walks off.