The nun, from the Missionaries of Charity order founded by Mother Teresa in 1950, points to a bassinet.
"This child lost her mother at the birth," she says.
"She delivered triplets ... and the husband did not take her to the hospital for birth. The mother died and the two other siblings died."
The baby girl's name is Hirashmi. She is five months old.
Sister Joan of Arc says the girl has a father and grandmother, but they cannot care for her.