I joined for a specific model that I knew was on one of the ATKingdom's sites but it seems like I cannot find her there.

Chances are she is still on one of our sites, though there is a rare occurrence where she may have had to be removed from our site/s.  Once a models content has been with us for 4+ years it gets moved gradually to our Archives site or if she is of an exotic ethnicity she would be moved to ATKExotics and labeled as ‘Archived Bonus Material’.  If you need help locating a model please feel free to email us at [email protected].  If you have an image of her please include it as well as any information you have on her to help us locate her quickly.