Well stated. I think some people have the right ability to tune into certain energies. I’ve always thought of physic people as being able to tune into the frequency to get information those of us with less high tech receivers can’t.This is a great story. Sounds like textbook case (or would if there was actual textbooks about such things) of a residual haunting. The energy of this woman was somehow recorded in the environment and is now being played back on occasion. This is why it keeps going along the same pathway and doing the same actions. It's not a sentient entity with agency of it's own.
Saying that there was a lot of masonry also ties into this. It's thought that certain metals or mineral, such as iron and limestone, are better at recording and storing such energies. Do you happen to know what kinds of material the masonry was?
It's also very interesting that all three reported the same activity but also each say different levels of detail. It goes along with the theory that such activity is simply not observable by everyone. Similar to how a color blind person simply cannot see certain things no matter how many people try to point it out to them.