Estrada was Port Commander of Philip S. W. Goldson International Airport, the only international airport in Belize. For 20 years, she worked in the immigration department. In 2015 she helped U.S. officials to find a smuggling organization. The organization was smuggling drugs and people to the United States and Europe. Then she was transferred to the northern border of Belize. She worked as an immigration officer at the Santa Elena Border in Corozal. She continued to refuse bribes and enforce the immigration laws.