I just adopted a kitty, and I live in a studio apartment, so the only choice I've had is to lock her in the bathroom with her stuff while my other cat is out in the rest of the apartment. They both can see/smell each other under the door, and they seem to be friendly towards each other and even playful. Do you think it's safe to let the new kitty out? She's kind of freaking out alone in the bathroom (my girlfriend and I are taking turns going in there and petting her, but we're thinking it may be better just to let them meet). Thoughts?