OK, so when I cleaned the cage, I took all the birdies out, because Hen Wen saw me taking everyone out and putting them in their little holding pen, and wanted to go along too. So I popped her in there, and scooped all the bedding out around the nesting box. Through the whole thing, I kept seeing Hen Wen poking her head up to watch what I was doing. It was absolutely adorable. She seemed to trust me though, because she didn't seem to upset. (Her and one of my other hens are very sweet.) Made quick work of laying down new bedding, didn't disturb her nest at all, popped her back in first, and she seemed absolutely fine. Went over to the food and water, poked at both, then went back to her nest. Easy peasy! I was worried about nothing!
Now my other hen started laying, but she won't sit on her eggs. Hen Wen steals them and sticks them under her butt, so she's got eight eggs under there now!