In November news broke that McCusker had sued her former coaches, Maggie Haney and Victoria Levine, for negligence, intentional infliction of emotional distress, and assault. McCusker cited how Haney forced her to train with an injured wrist in April 2017, an injured hamstring and a fractured ischium in the months leading up to the 2017 World Championships, foot fractures in early 2018, a torn supraspinous ligament in early 2019, and forced McCusker to train and compete at the 2019 U.S. Classic and 2019 Pan American Games while being diagnosed with exercise-induced rhabdomyolysis.