- DonVinzone1
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- Exalted Mythic Member
Canon so far supports that theory.
During her time with the Gravemind she is already on the brink of rampancy and she fights through that to become the Cortana we know from Halo 3. In other words: she's "fine" at that point.
Also: she was supposedly one step beyond any other Smart AI. Mainly due to the fact she was made out of the smartest human out there (Halsey) and was appearantly constructed with Forerunner technology input (the Journal and the end of Reach hint at that).
My guess is the events she's gone through did speed up her rampancy, but she is fighting it and can survive it. Will we see a very stable Cortana? I don't think so. But my guess is she fights her way beyond rampancy, and is capable of doing so because she is far more advanced (and: unique! So we don't know how she reacts to rampancy compared to other smart AI) than the other Smart AI.