Complex sentence: Nessa Holt (Marsha Thomason), also known as "The Ice Queen", is the former head pit boss of the Montecito and is described as "the best pit boss in Las Vegas".
Split into simpler sentences: Nessa Holt (Marsha Thomason), also known as "The Ice Queen", is the former head pit boss of the Montecito. She is described as "the best pit boss in Las Vegas".