I am a little surprised that she did this without a PEG tube (although I have to admit I did it without a PEG tube). I couldn't stand either Boost or Ensure (they would make me gag) and used Carnation Instant Breakfast instead. I was sick quite a bit in the post Tx phase. I tried decongestants and steroids to cut the mucositis with varying degrees of success. A mild salt water rinse may help but it could burn if she has blisters in the mouth. My mucositis went away at about 4 or so weeks. In early post Tx, progress is measured in 3 week increments.