Bean grower of the 19th letter
Surprise, surprise, the answer is me! :O
Snow, Google Translate is not a reliable source! XD As someone who actually speaks a reasonable amount of French, I didn't use it. While indeed works as a translation, a more direct translation would be "it's true." This was meant to be a reference to C'etait la vérité, (it was the truth), which was recently in my profile name for quite a while.
As for the other clues, Fabienne means 'bean grower' and the 19th letter of the alphabet is S.
Lichen = Moss
Enigmatic = Cryptic
One of my codes. It says "codes."