Complex sentence: In succeeding episodes, she is seen struggling with her father's increasing emotional instability and violent outbursts to the point of him hitting her and giving a black eye which prompts the other ER staff to wonder what has happened to her.
Split into simpler sentences: In succeeding episodes, she is seen struggling with her father's increasing emotional instability and violent outbursts. At one point Chen's father hits her, inflicting a black eye which causes the other ER staff to wonder what has happened to her.