The original character "Time Lady Stellastrendenlunjendorf Rothenshade" (the Time Shepherdess) has been around since late fall 1998, created for the online RPG group DOCTOR WHO: Doctor & Co (defunct early 2000s). Since Stella is such an incredibly complicated character with multiple incarnations — and a side-swipe pre-2005 lifetime involved with the Star Wars universe with multiple incarnations, as well — after so many decades, it is high time to have her full history and profile unloaded.
Stella is viewed as a stand-alone fan character within in the Doctor Who cosmos.
You can find all of the fanfiction by @mathiesmemos in one space on AO3 here — and if you're interested in writing any fan-fanfiction yourself, there's an AO3 for that as well to keep it tidy for years to come.
Hopefully this will not become a ghost page, but life is complicated and I am only one person.
-- Mathie Tremas.