After graduating in law, Larrotcha entered the diplomatic service in 1987.[1]
Larrotcha has been assigned to the diplomatic representations of Algeria, Belgium and Peru as well as to the permanent representative of Spain to the European Union. She was delegate of the Ministry of Foreign Affairs to the Barcelona 92 Olympic Organizing Committee, deputy assistant director general of Personnel, deputy director general of Patrimonial Affairs and advisor to the General Inspection of Services, the Diplomatic Information Office and the General Directorate of Spaniards Abroad and Consular and Migration Affairs.[2]
In 2012, Larrotcha was appointed director of the Office of the Secretary of State for Foreign Affairs. She was technical general secretary (2016–2017) and undersecretary at the Ministry of Foreign Affairs (2017–2018).[3]
In October 2018, Larrotcha was summoned to testify for an alleged crime of prevarication, in relation to a complaint that the diplomat Miguel Ángel Vecino had filed in court against three undersecretaries of the Ministry—Beatriz Larrotcha, Cristóbal González-Aller and Rafael Mendívil—[4] on the grounds that she was being unfairly denied positions abroad.[5]
Larrotcha's last posting was as Spanish ambassador to Belgium, a position she held between 2018 and 2022.[6][7][8] She died in Madrid on 3 December 2024, at the age of 65.[9][10]