How did they do it? his brain demanded of itself. How could they do it?
He never doubted that it had to have been the false seijins—no, the demons who pretended to be seijins!—but how?
There’s nothing like this in the records—not in The Testimonies, not in the Book of Chihiro, and not in the Inquisition’s secret files. Nothing! Never. Not at Shan-wei’s hands or during the War Against the Fallen. Not even Grimaldi accomplished anything like this after his fall!
So... what exactly Grimaldi done to be awarded with such special mention? Notice that she is mentioned AFTER the Shan-Wei and War Against the Fallen both, which suggest that her actions were particularly "notorious". And according to the Wiki,
According to scripture, Grimaldi sided with Shan-wei when she rebelled against the Archangel Langhorne, and Grimaldi's twisted version of the healing teachings of the Archangel Truscott became the cause of pestilence.
Considering that "something that even Grimaldi could not accomplish" was the sudden death of everyone inside St. Thyrmyn’s, I could not help but wonder: what exactly Grimaldi tried to accomplish? Considering that she is associated with pestilence, it was probably something nasty and biological. Some kind of biological warfare - but against whom? Maybe some mad attempt to kill the majority of colonists with bioweapon released, so the majority of the command crew would be forced to stuck with Shan-Wei original plan simply because they would be the last human beings alive, and without advanced tech they would not be able to maintain the existence of human race?
Interesting, huh?