In the 2015–16 season, Donlan/Bartholomay appeared at two Challenger Series events, placing fifth at the 2015 U.S. Classic and sixth at the Ondrej Nepela Trophy. They withdrew from their Grand Prix assignment, the 2015 Skate America, after Donlan fell ill with a severe flu. She developed labyrinthitis in her right ear, resulting in vertigo that kept her off the ice for three months and forced the pair to withdraw from the 2016 U.S. Championships. The pair announced the end of their partnership in March 2016. They were coached by Jim Peterson in Ellenton, Florida.