A female staffer has been arrested and two others, including a sister-in-charge, were detained for allegedly "selling" a child born to an inmate of a shelter home, run by Mother Teresa-founded Missionaries of Charity at Jail road in Ranchi. Anima Indwar, an employee of Nirmal Hriday, was arrested based on a complaint filed by Rupa Verma, the chairperson of Child Welfare Committee's Ranchi unit, Kotwali police station officer in-charge Shyamanand Mandal said.