Miranda was born in Santiago on 19 March 2000. She is the daughter of Aldo Miranda Cortés and Pamela Arce Rojas. Miranda completed her primary education at Grace School in the commune of Pedro Aguirre Cerda and at Liceo Javiera Carrera in Santiago. She continued her secondary education at the same institution and later at Liceo Bicentenario Teresa Prats of Santiago, graduating in 2019. She enrolled in the Public Administration program at the
University of Chile. At the time of the Constitutional Convention, she was a university student. == Political career ==