HI...gnorb's suggestion sounds resonable.....the only thing I want to add is chek that her "output" is working correctly....PPI's tend to constipate some and she may not have mentioned or noticed a change in this function.
Keep us posted
"selma"
After starting a PPI treatment people can sometimes begin to eat more, closer to what their normal level would have been without the GERD, since eating is no longer associated with pain. Might this be the case? Keeping a food diary may help in this case. My only advice is to watch the intake and make sure that any increased intake doesn't cause persistent breakthrough.
Good luck.