I posted this under Technical Issues, but that may have been the wrong place...if so, I apologize.

My most experienced villager just vanished. I checked the mausoleum and she's not there. And she's not listed on my list of villagers, and my count just went down from 37 to 36.

I was trying to do the Master Builder challenge, and had hit the Hyperspeed button. She started the challenge...and then dashed off to fix a hut. This was the THIRD TIME she's done this (another obvious bug)...so I shut the game off in disgust. When I came back, she was gone.

Why did she vanish--and will she ever come back?