This person is selling prints of art which may not belong to her: http://search.ebay.com/_W0QQsassZkeras4
This has already been confirmed to be Cara Mitten's: http://cgi.ebay.com/GRYPHON-BABIES-MYTHICAL-FANTASY-ANIMAL-PEN-PENCIL-ART_W0QQitemZ6593907214QQcategoryZ360QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
And yes she knows about it, in fact I got the link from her journal so there's no need to contact her.
Maybe someone recognizes the others art though?