Anya saw the group gathering and she figured they were the rescue party. She made her way over to them and caught the part about wondering how many people were inside. "Hey, I assume you're part of the Buffy Rescue Team?" Her voice was perhaps inappropriately peppy sounding, but that was Anya, she couldn't help it. And at least for now, she was in her human form, not her demon form.
"I don't think there's anyone around Buffy. But I don't know if demons in this world have souls or not, so I could be wrong there. But I don't sense any souls around her. Just her." She looked at everyone that was there so far, easily picking Castiel out as the man in the trenchcoat. "I'm Anya, by the way, for those who don't know." She felt compelled to introduce herself. "So, who else is coming? I think we should get in there before much more time passes in case Buffy is alone so we don't encounter the demons."