Regardless of Grace's attentions, she still catches the other off guard, though not enough to cause any unwarranted shouting. So there was someone else here, after all. At the moment she didn't seem particularly malicious... and there was nothing else to go on as far as what the hell was going on.

"A what?" Sonia almost squints at what this person is saying. A guy with a gun? She keeps her low voice, but pointed enough to emphasize her urgency. "What is going on? Do you know where we are...?"