"About everything" is no answer at all. Josiah, Tiffany and Colleen have all been bending over backwards to be nice to Melody, and Melody was being nice to all of them in return. So what changed? Nothing changed about Josiah, Tiffany or Colleen, so that leaves Melody. If "just being pregnant" is all the excuse she can give for turning grumpy just when they had been tenderly making love (with her feet warmed first), then Josiah will just have to wait out the months till the babies are born, and THEN see if he has a wife who loves him.