Faith was pretty darn silent, but Jo hadn't survived as long as she had by ignoring her surroundings. She had a sense that someone was there, and swung her gun around to aim at the brunette who was approaching. She didn't look quite pale enough to be a vampire, but Jo wasn't going to trust that.
She kept the gun aimed and raised an eyebrow at the brunette, silently asking her to give some proof of who or what the hell she was.