Surely the Illithid child already knows through the hive mind or whatever.

They are still mind flayers. The child will grow up to be a monster.

Don’t feel sorry for the brain eaters.

Honestly, this is just an indictment of the health care system in the Forgotten Realms. Mindflayers should control a powerful lord to mandate universal healthcare and improve the supply of potions and employ cleric healers throughout the realm.