Alba Nidia "Miss Pupa" Encarnación Ayala (February 2, 1956 - 11 March 2012) was a sixth-grade public school teacher and community leader in Vieques, Puerto Rico. A devoted Catholic, she always put God first; and that was her foundation, passion and strength for living a life of service to others. She advocated for the rights of the people of Vieques and Puerto Rico in general. She was the voice for better Maritime Transportation and health services which are crucial for the people of Vieques, Women's rights, the poor and the outcast; fought against prejudice, racism and injustice. She also helped lead the movement to end U.S. Navy bombings in the island-municipality and have the lands expropriated by the Navy in the 1940s returned to civilian use. She died on 11 March 2012 in the hospital del Maestro in Vieques, due to complications of diabetes.