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.

Marshella Chidester was sentenced to prison in the Swan Boat Club tragedy that left two young siblings dead and several others severely injured.

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.