On April 20, 2024, Chidester drove her vehicle into the Swan Boat Club in Berlin Township, where a birthday party was taking place. Two siblings, ages 4 and 8, were killed and 15 others were injured. The children who were killed were later identified as Zayn and Alanah Phillips.

A Monroe County judge sentenced Marshella Chidester to 25 to 50 years in prison for her murder charges. Additionally, for the two counts of operating a vehicle while intoxicated causing death, she will serve 84 to 180 months, and for the five counts of operating a vehicle while intoxicated causing injury, she will serve 24 to 60 months.