That's actually not a bad idea. I like it.
It could be tied to how much damage the player does to it or how many enemies they've slayed, no? Like, if they're not doing much damage, the initial response dictates what is said next.
Like, a positive thought of the warframe is turned negative and the negative thought is affirmed by the outcome of the battle. Or, as you suggested, the negative is turned positive.
It could also have special commentary on the warframe if it manages to go through an entire mission without sparking any alarms.