Well, you're certainly doing it "right!" LOL In that case, I have no idea. We didn't have any reports of "qualified" villagers not attaining elder status during beta. Hmmm....I don't suppose you'd like to try making her work in each of those areas just a bit more and see if she makes master? But you'd better do it quickly, before she dies.

There will be a slight change to the way masters are calculated in the update that's coming, but that doesn't help you now.