A few days ago we started to notice that she was becoming more active, including coming out of her nest area to explore on her own, a behavior that had stopped while she was sick. Last night we even let her back into the cage with her daughters, and within a few minutes Rem was being lovingly groomed. Afterwards everyone curled up to sleep together, as before.
Here's Rem eating ice cream from the comfort of her nest a few days ago:
Breakfast in bed ... what more could a sick mouse want?