Aw, that's very annoying. v__v I wonder why no one will do anything for you? It couldn't be more obvious you've been stolen from. I suppose this is the type of thing people complain about, with admins. It's even more frustrating that she's being very arrogant, did you use this to report her?:
Although I suspect you have, I hold out the hopes that it's more effective than the report deviation button. (Goodness knows how often I've tried it..) Since she IS selling your artwork as a print, which is worse than just having it up and displaying it without your permission.
Wow! This is so gorgeous! I love how light and airy it feels (haha, even though it's water). But it's true, the wonderfully soft shading and delicate colors make the entire piece feel very refreshingly light, like a cool breeze on a summer's day. Water is one of the hardest things to draw, but you did a phenomenal job with Miku's hair. Beautifully done!