Rebecca’s disappearance… and reappearance

Perry’s wife Rebecca, the mother of his young daughter Amy (Olive Abercrombie), has been missing for nine months when Outer Range begins. Did she run away? Possibly; she wasn’t fond of Wyoming ranch life, though nobody thinks she’d abandon Amy. Did she die? Also possible, of course. Or did she go… in the hole?
We never learn the whole story. The only crumbs are a scene pointedly labeled “nine months ago” in which one of Wayne’s ranch hands shows him an unusual rock he found, and we can tell Wayne immediately knows it’s from the hole—and another scene in which Cecelia thinks for an instant she’s spotted Rebecca in town. When Rebecca herself (Kristen Connolly) pops up in the season finale, we still don’t learn what happened; she steps out of a shadow, beckons Amy over, and tells her “I had to go. I had to hide. I’ll explain it all…” before melting back into the shadows with her elated daughter in tow.