She had to lose him, to do him harm:

Police in the Indian state of Andhra Pradesh have detained a mother who they accuse of drowning her adopted son. The mother tied the baby to a heavy stone and threw him down a well after villagers told her that he might be suffering from Aids, police say. [BBC]

The ten-month old child didn’t have a chance; coughing and feverish, he was in the coastal village of Gurripudi, a place full of idiots whose idle, tragically incorrect speculation carried more authority than, oh, I don’t know, ACTUAL HIV TESTS. Gurripudi, which is in the East Godavari district, is an area where HIV is rampant, where it would be easy to stupidly, hysterically assume the worst about a baby who isn’t yours.

The murderess is in police custody, her husband hasn’t been charged. The couple adopted the little boy from a nearby village to complement their family, which already included three obviously lucky daughters.