She was a sideshow freak by the name of 'The Giantess'. She was tormented by children and hecklers until Horace Nebbercracker took her away from the circus and married her.
While building their dream home, Constance was heckled by two children on Halloween. Flying into a rage, she fell into the unfinished basement and encased herself in cement.
After her death, Nebbercracker finished building the home in her honor. From then on, Nebbercracker had to chase people from his property, else Constance's spirit would fly into a rage and kill the trespassers.