Ahhh, my mother is almost in the same situation. Won't quit the Omeprazole because it does so well controlling her GERD, but when I mention a lower-carb, less grainy diet, she eschews it due to the fact (her fact) that "diabetics need carbs". Sheesh.
I was having terrible GERD and terrible difficulty swallowing food, to the point of regurgitation. An Upper Endoscopy showed Eosiniphilic Esophagitis, which led to my GI to recommend Omeprazole (this was all pre-Paleo). Sure enough, the Omeprazole stopped the GERD right in its tracks, and my swallowing improved. Problem was, I gained about 10 lbs. right in the middle, in about 2 weeks. Did the research, and they now say that 60% of PPI users develop osteoporosis. Which explains why my mother is now shopping for a walker and continually falls in the tub. Still, she won't listen.
I did tons of research, began LC, and finally truly began Paleo. GERD=Gone. Difficulty swallowing=gone. Took about 4-6 weeks after going off the Omeprazole for the 10 lbs. weight gain to finally go away. I KNEW the weight gain was due to the Omeprazole, as I am a hip & thigh & bust weight carrier. I've always maintained a smaller waist, despite the fact that I currently weigh 154.8 lbs. I looked like I was pregnant, and nothing would button.
I believe that Paleo has calmed my inflammation, which allowed food to pass through my esophagus more easily, and the lack of grains has stopped the reflux of acid. I've also noticed that my nose, which has ALWAYS been stuffy at night (I used to go through a box of those BreatheRight strips a month), is clear and it's easy to breathe through my nose, even though I'm a stomach sleeper (with head turned). So I KNOW my inflammation all over my body must be healing.
Is it possible to get your mom to do a 30-day "no grains" experiment? It's not possible for me, as my mother refuses to believe, as a Type 2 diabetic, that she can live without grains. I keep trying to explain to her that veggies & fruit have carbs; she can get her daily needs that way. But she's so proud of the fact that she moved to whole grains as a "healthier choice" years ago, and not willing to give it up.
Truly Paleo since 1/1/2012 (Doing Leptin reset)
Turned 50 on 3/8/2012 !!!
11/27/2011: 162.8 lbs.
7/15/12 : 148.6 lbs.
Clean Paleo diet: Lots of CO, Meat, Seafood, and doing CT 5x/week, 40 mins @ 50-52 degrees F