Her father died during the war and as the eldest child, she became the family breadwinner. Her two younger brothers, Alex and Alvaro, are also actors. Amalia married fellow actor Romeo Vasquez in 1965 in Hong Kong but they separated in 1969. They had a daughter, Liezl Sumilang (wife of actor Albert Martinez). After her divorce from Vasquez, Amalia married Joey Stevens, an American businessman with whom she adopted a son, Geric Stevens. She divorced Stevens after 28 years of marriage, citing infidelity. Stevens died in 2012.