[She cranked her neck to get a better look at the sketch. The fact that it looked very similar to a triquetra, if more circular, didn't go unnoticed, and she smiled at the coincidence.]

I've see similar symbols before in my own practice. Always in threes, just like that.

[She glanced around, pressing her lips together in through.]

So, what, are you thinking to place this at each spot around the circle where someone stands?