It is said that deep in the swamps and bayous of Louisiana there lived a Cajun witch in a ramshackle hut. A young pregnant woman was lost, wandering through the swamps, and came upon the witch's hut just as she went into labor. The young woman died, leaving the witch with a baby girl.
But the witch did not see a baby girl: She saw a soul for the taking. In an elaborate rite, she attempted to use the baby's soul to summon a terrible demon, but her attempt failed, turning the baby into a monster, part lizard demon, part baby girl.
The witch saw the monster as useful, and she raised the monster girl until her fourth birthday — when the monster devoured the witch whole, leaving not a single evil bone to sully the earth.
It is said then that the Tirquitte still lives in the witch's ramshackle hut deep in the swamps, surviving on goats and chickens and any alligators which dare approach too close, and by these she has grown into a pretty young woman — but no man has yet seen the Tirquitte and lived to say for certain.