Thanks for your input! Yeah, I assumed she's female, too. At first I assumed she was a water fairy, since I was right on the ocean and she had a blue cast to her. But something else occurs to me that may be connected.
There are birds around there that aren't very pretty, and I called them grackles, although that may not be the name. They shed a lot of feathers and look kind of like they have birdie mange or something. There are brown ones and black ones. Anyway, at lunch the same day this photo was taken, I fed the grackles my bread. I would tear off bits and throw it, and they would come by and pick it up. I really thought they were cute in an ugly sort of way. That night, when I went to the hot tub, there was a single brown grackle feather artfully placed right on the edge. I said, "this must be for me!" and I saved it. Later, I found a black one in the EXACT same spot! I still have both. So it's possible that this fairy is either guardian of the palm trees the grackles were roosting in (right above the hot tub is where they all slept at night), and was friends with the grackles, or maybe she was guardian of the birds themselves.
As for meditating, I couldn't help but be in a meditative state in that hot tub, but at the time the picture was taken I was "meditating" on tequila! 
Maybe it was a tequila fairy!
Seriously, though, I see those splarkles you speak of all the time. In fact, I saw them frequently on the day I discovered the oddity in this picture. These sparkles are different from the ones you see when you get out of the bathtub too quickly. Similar, but they just blip across my field of vision for no apparent reason.
Oh, one thing I wanted to add: you see that especially bright blue orb-like thing on one of her feet? What do you suppose that is? Is that her entry point into the world, like the sparkles we see only bigger, or is she holding something?
haha
