Ive been awake for over 24 hours so don't take everything I say too seriously. From what I have gotten, Malahayati is not one of the Exodus AI. Each ship does appear to have have its own AI. In Old Russia 2 grimoire, Exodus Red calls Rasputin "The Tyrant" and never launched. Exodus Blue was never finished. I believe the AI in Old Russia 4 is still Exodus Red despite others out there claiming it's Exodus black, or Failsafe. Malahayati speaks of Rasputin in a very different tone. I am fairly certain that Failsafe became isolated from SIVA. It's very likely, especially with that strike info, that the fallen let it out. There's a few scannable servitor remains on Nessus. One mentions how the fallen rely on them for Ether and wouldn't abandon the remains unless they found another source (something along those lines). Somewhere, I forget, it's mentioned how the house of devil's is trying to recruit more houses by basically saying Siva is the end of their reliance on Ether. So I'd say Failsafe is probably just old and damaged, not infected by Siva and unrelated to Malahayati. That's just how I see it anyway.