One time I was walking this long dirt road with my wife and her family. It was out in the countryside here in Latvia and we were surrounded by fields of rye. The road felt open there with these vast fields to our sides, but the wide openness narrowed quickly when we came to a tree line. We started walking in this small bit of forest and the first tree to our right had one long branch hanging down with a few leaves on it. One leaf, for no apparent reason, was shaking and swinging in circles. No wind, nothing. But that one leaf was moving like a propeller. I noticed it, and looked back at my wife and her parents, and they just put their finger over their lips as if to say "shhh". Later my wife didn't elborate much, but she said things like that happen, we notice but say nothing. Be respectful and pretend like it didn't happen.
So, I don't know if that falls in line with meeting a fairy, but if it does, the folks around here seem to pretend they see nothing, and perhaps that's for the best?