Complex sentence: Carrie, overcome with humiliation, attempts to run out of the gym (unaware that Tommy had nothing to do with the prank) as she flees, she is tripped by someone in the crowd and falls, causing the laughter to grow even louder.
Split into simpler sentences: Carrie, overcome with humiliation, attempts to run out of the gym (unaware that Tommy had nothing to do with the prank). As she flees, she is tripped by someone in the crowd and falls, causing the laughter to grow even louder.