Oh...Nina. <3

That looks more like her sister Mina. Although maybe the dark wings indicate otherwise.

Mina doesn't have long blonde hair either. It's obviously Nina.

Yes, it's Nina. According to the artist, this is his version of Nina fused with the wind shaman, which in the game was just a pallet-swap that made her dress green.

Oh, just look at yourself. This is a huge success.