Because I hate everything and everything is wrong.
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I can't say with complete assurance because as I've mentioned before in this thread, I stopped watching RvB when they went with 343 and starting working with Halo 4's stuff, so her more present attributes I'm left taking from their analysis. Her martial arts abilities are negated from the fact that they're all OCs of Halo and Spartans, they're all experts. If Carolina's forced to use all her armor abilities just to keep up, and still gets a beating, the one A.I. Church should have crashed easily.
Also, they put their main focus on that The Meta must fail due to multiple directions from multiple sources, while Carolina has a singular input of help, but...this hasn't stopped Meta in combat before. Over-abusing time stopping has forced him to leave, but it was barely used. Nor should it be needed to if he just stopped time from the get-go and killed her then. Even more-so this particular battle when even if the A.I.s have different choices in direction, they all have the same goal here; kill Carolina.
Also also Meta ALREADY beat Carolina before, the additions since Halo 4 didn't prove to help her at all. Also also also I don't like finding myself being comparable to Grif at the end. Not unless I get a free cone out of it. And I don't particularly like Carolina to begin with.