I missed this when it dropped, but there's an examination of St Brides done by the Assume Nothing podcast. I've not far in, but so far it is relatively unsensationalized.

Their own summary:

Ireland, 1984. St Brides School for young ladies opens its doors in the quiet fishing village of Burtonport, county Donegal -- but all is not as it seems.

The mistress and 'girls' appear to believe that they live not only in a different century, but in an entirely different world.

They are The Silver Sisterhood...

Most of the St Brides games may be found on Internet Archive. If you like that sort of thing, they are the sort of thing that you will like. 

Happy New Year! 

 This article details--no, it doesn't summarize well. Here's an entrée:

"Out of this group would arise several radical separatist movements with overlapping membership, including a religious one called Lux Madriana—worshiping a female god with rituals supposedly passed down from a “magical matriarchal community” in a distant past—and an elaborately fleshed-out otherworld called Aristasia. Much like the rich fantasy worlds created by Tolkien or the Brontë sisters, Aristasia became an ever-growing obsession for its creators, with its own customs, calendar, literature, and history, to the extent that some of the worldbuilders eventually dropped out of university to attend their own unofficial Aristasian school instead. In Aristasia there were two genders, both female (assertive brunettes and demure blondes); the decadent modern world was known as The Pit; and the word for person was not man but maid."

ht Emily Short

FURTHER: A short, somewhat melancholy history of Aristasia-in-Telluria