As much suspicion as she was under, the machine named Elizabeth slowed a little and eyed him, in turn, with a measure of its own suspicion. Not in terms of identity, but suitability for what would be required. Better than a human, though still with vulnerabilities. Everything had them and Marcus was an evolutionary stepping stone.
But she could be a little more to the point with him. His nature allowed for it. He understood common frames of references better than the rest would.
"Unless a nearby asset is attacked, humanoid infiltrators aren't typically deployed en masse. It's a waste of resources," she stated, matter of factly. "We need a tracked Hunter-Killer... If Skynet locates us, it will send many. But not if it believes we're somewhere else."
She halted, looking slowly left and right. Searching. Then looked back at him.
"I have a way to disable it. To use it to send back false data."