Buscombe's strategy allowed lead driver Romain Grosjean to claim two successive top six finishes in the season's first two races in Australia and Bahrain. Following speculation of a disagreement, she left Haas in June 2016. Following its purchase by Longbow Finance the following month, Sauber employed several new personnel as part of a recruitment drive with Buscombe being hired by the team in September and started her new job at the Malaysian Grand Prix. She formulated a strategy to allow Felipe Nasr to finish ninth in the Brazilian race, which saw Sauber overtake Manor Racing tenth in the Constructors' Championship.