Creepy Photo Taken Inside Waverly Hills Sanatorium

Came across this old photo that was supposedly taken inside Waverly Hills Sanatorium in Kentucky back in 2006.

Apparently, a paranormal investigator named Tom Halstead captured this while exploring the building. If you look toward the right side of the hallway, there's what looks like a woman just standing in the doorway.

What's even creepier is that some people believe the figure could be the ghost of a former nurse who worked there. I've also seen the second image floating around comparing the figure to an old photograph of a girl, but I'm not sure where that comparison originally came from.

I know Waverly Hills has a pretty dark history, but this is one of the stranger photos I've seen from the place.

Not sure if it's an actual person, something paranormal, or just a weird camera effect.

Curious what everyone thinks. Has anyone seen this photo before or know more about the story behind it?