- last post: 01.01.0001 12:00 AM PDT
She can't be a Brute...we saw her face in the Trailer... -_-
However, she may need to get down to New Mombasa not to help the Covenant but maybe for a personal agenda. From the books, we know that ONI doesn't always play by the rules or play fair. May be some secret ONI op that she is just using the Squad for, as a way to not cause suspicion.
My bet is that if that is the case, there is some Spartan facility in Mombasa, that's why she wears the armor! =P
Or maybe even she lost something very personal in Mombasa (boyfriend, husband, parent, etc) and she disobeys orders, usurps command from Buck and takes them down to New Mombasa to look for it. Buck would be mad but not suspcious. ONI takes command of everything (SSG Avery Johnson and Byrne in Contact: Harvest) without an apparent reason at the time.
I wouldn't rule out the Treason Theory, but it seems highly unlikely.