[mvpel]

If you knew it was your grandmother, why do you suppose you had such paralyzing fear? Just the overall creepiness of the situation, perhaps?

[lowbridge]

If you knew it was your grandmother, why do you suppose you had such paralyzing fear?

I dont recall "knowing" that it was my Grandmother at the time. All I recall was that I had this paralyzing fear, and I had no idea why I was having it. I do now regret that it was a terrifying experience though.

Just the overall creepiness of the situation, perhaps?

I think so.