Given the following from the 5E MM (pg 176).
Monstrous Motherhood. Hags propagate by snatching and devouring human infants. After stealing a baby from its cradle or its mother's womb, the hag consumes the poor child. A week later, the hag gives birth to a daughter who looks human until her thirteenth birthday, whereupon the child transforms into the spitting image of her hag mother.
Hags sometimes raise the daughters they spawn, creating covens. A hag might also return the child to its grieving parents, only to watch from the shadows as the child grows up to become a horror.
Would a hag-child raised by it's parents end up necessarily evil? Or merely horrific?