First of all, I must point out that the author is YTMND, but she did not post the article herself and this has led to confusion in some cases.
The second thing is that this is one of my favourite anomalies and I found it a bit of a shame that there is hardly anything more about Isabelle and I feel it has potential for more. The author has also been inactive since 2019, so there's unlikely to be anything from the original author anytime soon.
That's why I wrote the tale "A Strange Daydream, As Sweet As Poison", which is set in the Japanese Foundation Collective Canon, as well as in my own Project Trickster.
Gruss
Rabe