She was born in Bogotá, the child of a couple of actors who had a theatre company in Spain.
She began acting at the age of 4, and at 17 she formed her own company.
In 1947, while in Guatemala, she married Argentine actor and director Pepe Cibrián, with whom she had two sons.
There, Campoy acted on TV, cinema and theatre; she also published a book of love stories.
Campoy died of recurring pneumonia in a hospital of Buenos Aires in 2006, two weeks before turning 81.