CowsGoMoose did this amazingly awesome picture of Yahfi the wild child. She can be seen here at a Menzoberranzan nedeirra, or sweat dance (rave) that the young drow indulge in. Well, that is in our D&D game in which I play Yahfi.
The comic strip Yahfi isn't located in the Forgotten Realms, has never heard of Menzoberranzan, and is instead a dökkálfar from Norse mythology. You know, for IP reasons. :) Although with the new OGL, she might be completely legal. Well . . . no . . . most likely the comic would violate 'community standards' . . . okay, the comic will violate ALL standards, so no, Yahfi has nothing to do with WOTC.
Again, CowSoMoose did an amazing job. Go visit her tumblr!