None of what makes this place possible makes actual sense, unfortunately. But Lily's right. Alternate universe, brought by magic, can't go home, the whole nine. It's insane, I know. I've been here twice. I was sent home once and came back with my memories of this place in tact. That doesn't always happen.
[Derek] Listen, what was the last thing from home? There's a few of us from home here and we're not all from the same point in the timeline.