Bishop Tamayo worked industriously to heal divisions within the diocese, but repeated attempts to elect his successor ultimately failed. Following Bishop Tamayo's announcement in 2009 of his wish to resign (to focus on his ministry in Uruguay, ahead of his anticipated retirement in 2012/13, and a further inconclusive election, the responsibility for an appointment fell again to the Metropolitan Council, which in January 2010 appointed Griselda Delgado Del Carpio as bishop coadjutor (assistant bishop with the right of succession). She was ordained to the episcopate on February 7, 2010 and following Bishop Tamayo's resignation was installed as diocesan on November 28, 2010.