Another myth!
The photos from outside of the house that were taken that day show no snow by the house. Whatever snow there was had melted!
Explain how the basement window, that the "intruder" supposedly entered the house by, had flaking paint and flaking wood all around the perimeter that was untouched. How could an "intruder" slide through the window without disturbing any loose paint flakes? It doesn't make any sense.
The only prints found on any of the windows were Patsy's.
Your myth. The photos were taken after the sun had come up and melted the snow. There was a glazing of frost and there were patches of snow, especially near the alleged basement window entrance, which stays in shade most of the time.
No outside footprints.