On 9 December 2010 Fernández was questioned as a witness in relation to Operation Galgo, an investigation into a Spanish athletics doping ring being carried out by the Guardia Civil. She denied all charges of doping and was allowed to remain on the team that represented Spain at the European Cross Country Championships held in Albufeira, Portugal. "El País" reported that her coach, Manuel Pascua, admitted to police that he organised doping schedules for his athletes. Pascua later denied this report.