She had reason to freak out. While she couldn't hurt me, I certainly could hurt her. Simply because she existed, and I happened to see her. I don't want to be this threat to another being. I've hurt living beings far too many times out of fear that wasn't valid. I don't want to generate panic in another. Thankfully, this time I was somewhat present. So . . I turned around and left.
A few minutes later, I came down again, turned ON the light and, of course, she was nowhere to be seen. I'm grateful I didn't harm her. But I did frighten her. I wish I'd had enough presence to send a different message of "Let's both calm down and work this out." After all, we wanted the same thing - to have nothing to do with each other.