Complex sentence: Glen leans against the car door and smashes his head against it 10 times, screaming for Anney to kill him until she strokes his head in forgiveness, but she eventually returns to him anyway.
Split into simpler sentences: Glen leans against the car door and smashes his head against it 10 times, screaming for Anney to kill him. Until she strokes his head in forgiveness, but eventually returns to him anyway.