Based on the time line for your mom it appears she had her PEG placed before she actually needed it. I did also. My gastroenterologist started me on Carafate right after he put the PEG in, even though I was and had been taking Nexium for nearly three years. He told me it would supplement the Nexium and help avoid a major reflux problem during treatment. Also, should some occur, which it has, he said it would help to heal the damage done by it quicker.
Bill