She was in town checking out the 100-plus-year-old building for a potential project.
Body camera footage was captured when a woman and a child jumped from a second-story overhang.
The victim was identified Monday as a 20-year-old from Little Canada.
The body of third person was recovered about 7 a.m. Sunday after officials searched most of the night.
Officials promised to start the massive rescue effort as the weather broke and the sun rose.