As these witnesses had actively engaged in trying to haul Margaret down from the ceiling it is highly improbable that they were all suffering from hallucination, and, unless they were liars, it is possible that she was a genuine levitant with other mediumistic powers that could have been developed under more auspicious circumstances.
adjective
that levitates
(figurative) that rises or floats in the air
All the levitant euphoria of a moment past was gone now.
His rooms were as levitant with her as they were with air.
Though our clayey feet still press the earth the levitant soul may saunter among the stars.