The actions didn't pause, though there was a slight movement of head. Everything about Terminators was systematic to the hilt. Those who indicated otherwise just happened to be better at hiding it.
Which did nothing to disguise how unlikely this meeting would be... Former mermaid and genocidal machine.
"I detect it. I know to avoid it. It doesn't cause distress, in the same way as living creatures."
John Connor had once initiated a conversation not too unlike this with a T-800. This one, on the other hand, was not restricted in its behaviour. It had no reason to particularly care about the fates of those around it, nor even to protect them, now that it no longer had a need to pretend it was a human. But neither did it feel any need to embark on a campaign of extermination. In some ways, this made for a potentially more interesting series of interactions.
The array of tools was either immediately suitable or could be adapted. The T-X was Skynet property, likely manufactured by different hardware, but could still use what was available. The line of questioning didn't cause the machine to stop, but its head did lift, paying more sensory attention to what Ariel was saying.
Did it understand human behaviour? In a sense. The data was relatively basic and didn't touch too well on more refined graces. As time went on, resistance forces created new ways of detection, making it less likely that infiltration missions would be successful. Which, in turn, meant less available data of what the units had experienced. It might have the accumulated knowledge of all Skynet had gained, but was essentially a child.
"You have no designated assignments," Elizabeth succinctly replied. Without looking down, her left hand exchanged one tool for another and a small motor in it could be heard to whir. "And cannot enter standby mode indefinitely. You desire stimulation."
Glancing down, once more, the equipment was withdrawn and Elizabeth raised the arm in question. It transformed, reconfigured, but... No ignition. It would need more work.