Back in >>1280856 I said Not Glider/Limestone Fly/Dusk Shine's cutie mark looked like a cloud and lightning bolt, or I jokingly said maybe a cone of cotton candy. I guess I shouldn't have opened my muzzle that way. It looks like it actually is cotton candy after all. Someone on the MLP Wikia noticed it too. It's a recolor of the cutie mark of this unicorn from Canterlot Boutique, whose pink version clearly is cotton candy on a paper cone, not a stormcloud and a lightning bolt. Maybe Sweetie Skies as a permanent name for her, given her cutie mark and her adorable equalized smile (unless the cards or whatnot actually give her an official one). Not Glider and Limestone Fly were my ideas for placeholders when we knew nothing at all about her besides her equalized appearance, but it would be odd for a pony to be named after another existing character. Especially since she's now much more clearly distinguished from Night Glider and Limestone Pie. I mean, Skyra and Guyra, sure; they basically are altered clones of Lyra. But that's no longer the case here.

(And the cotton candy unicorn customer needs a name too.)