Mercy was born as the daughter of Simon Arackal Monippally and Pennamma from Mattappallil family in Karimkunnam. She was born in January 1965 at Karimkunnam.
Mercy married Abraham son of Chacko from Chemmalakkuzhy family at Njeezhoor on January 27, 1994 in Njeezhoor Church. Children of Mercy and Abraham are Maria and Jacob.