Complex sentence: Charlotte meets with Trystan in her car at the side of a road and begs him to stop coming after her, when he makes it clear that he has no intention of backing down, she runs him down with her car.
Split into simpler sentences: Charlotte meets with Trystan in her car at the side of a road and begs him to stop coming after her. After he makes it clear that he has no intention of backing down, Charlotte runs him down with her car.