This is probobly just wishfull thinking but
Both are AI
There is a crashed ship containing siva called exodus black on nessus, part of the exodus project, which malahayati was part of,
malahayati was sent off into space controlling a colony ship containing siva
Both are female
Failsafe refers to nessus as "her planet" in the strike, showing she was there for a long time, probobly as long as malahayati would have been there if she crashed shortly after launch
Malahayati was having trouble controlling siva, which could have resulted in the crash before or during the collapse.
Please tell me if you have any supporting facts, or have found any holes in this far fetched theory
(All of this lore comes from both myelin games and my name is byf)
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I know this isnt all based on facts or substantial evidence but I think Failsafe is too happy to be Mallahayati. It just doesn't feel right for this ancient ship AI to be so cheerful.