Complex sentence: They also revealed that the only known living relative in his hometown was a young niece named Jamie Lloyd, who has been adopted by a foster family after Laurie Strode was apparently killed in a car accident along with Jimmy Lloyd, Jamie's father.
Split into simpler sentences: They also revealed that the only known living relative in his hometown was a young niece. Michael later learns that she is named Jamie Lloyd, whom had been adopted by a foster family after Laurie Strode was apparently killed in a car accident along with her husband Jimmy Lloyd, Jamie's father.