Subject: How about this one?
Author:
Posted on: 2014-06-13 22:47:00 UTC
https://www.fanfiction.net/s/9349250/1/The-Last-Vanya
"Before the Elves left their Waters of Awakening and Endor for a new world far to the west under the protection of the Valar, a darkness had already fallen upon them and some of their number were lost to them, never to be seen again. This is the tale of one of those Elves and her fate far from the light of the stars, deep in the bowels of Utumno and of Angband. Strong adult themes"
Seems to fit b) okay, and looks dubious, though I'm not 100% if we count it as "bad" just yet because I only just found it.