"Magic, supposedly." Molly shrugged, then quickly clarified. "Not mine or anything. Not anyone's who is stuck here along with us, as far as I can tell, and we have several fairly powerful magic users in our midst. "I was told there was some sort of invisible barrier, even if you try to leave by air or sea."
How long? That was a fair question. Molly had despaired over the same thing. It was probably best to rip off the bandage quickly.
"Unfortunately, I'm not sure there is a limit. Unless the hotel gets bored of us, I suppose." She was definitely not the best person to explain the concept of time travel and multiple universes, but she would try. "Apparently there's a version of us that never left our own timeline, so no one will know we're gone. If we do somehow get sent home, because people do periodically disappear and we're told they have left, we could reappear at the same point in time that we left and continue on from there as if no time had passed at all." She hesitated. "Um. Going by the amount of blood that you were losing, you might be returned to your own world only to die?"