She's not. The Lusty Argonian Maid was written by Crassius Curio around 3E 427, 6 years before the Oblivion Crisis and 206 years before the time in Skyrim. If anything, the fabled maid was someone who likely worked for Crassius Curio. However, no Argonian appears in his manor in the game Morrowind...so...who she is remains a mystery.