Okay... Now, is this something the Night Walker could always do or is it something that it could only do with a 'pilot'? Maybe that's what it wanted Gavia for - To use the sophistication of her mind to 'evolve' and be able to do more than the limited programs of its components could do on its own?
Here's a thought though: Is it malign in its intent or is it just attempting to achieve the purpose for what it was created? Was it originally a tool to be used by humans, an extension of the mind and body, much like Gavia's normal abilities but on a vastly greater scale?
Even if it does not intend harm, could Gavia's mind handle being the crux of such power? Worse, if it is malign in nature, does it only require her brain's processing power, not its independent functions?