She is a member of ANCI (Nicaraguan Association of Cinematography, in Spanish Asociación Nicaragüense de Cine).
After high school she studied at Duke University, in North Carolina, USA and graduated with a degree in Economy (1979).
In 1982 she traveled for a short period to El Salvador to cover the war as photographer and she has stated that she almost lost her life.
[4] In 1983 she was transferred to the Nicaraguan Institute of Cinematography INCINE (in Spanish, Instituto Nicaragüense de Cine) where she started working in the documentary production department and quickly became its chief.
In 2012 Lacayo was selected by the World Bank to participate, with four of her photos of the dumpster, in an exhibit titled El Cambio in Washington, DC.