Jo kind of appreciated that the stranger had come prepared. She still wasn't getting a 'vampire' vibe so much. That didn't mean that she wasn't on her guard, but she did direct a little smirk at the woman.
Then she heard a scream from inside the warehouse. She didn't exactly let her attention waver, but she did nod toward the direction of the scream and then raised her eyebrows at the brunette, as if to ask what she might intend to do about it.
If the intentions weren't anything but rushing in to help, Jo was happy to shoot the girl enough to maim her and then move on to help.