Diabetic folks

very good advise here. Everybody is going to have that thing that triggers a spike and it might be different for some. I eat a baked potato (slow burning starch) and I get a little spike. When one of my employees does the same thing she goes to 400.

metformin will work as a diuretic at first and can curtail hunger make sure she's eating in regular intervals.
Metformin glipizide glimepiride etc.. do help control levels BUT one should not rely on them to maintain a poor diet and bad food choices. When is she spiking? If at night I think is normal for most, self included. I highly recommend writing a log of food intake and check levels a couple hours after eating a meal. until you figure out what food is the trigger. I do and CAN eat anything. There are just some things that I eat in a smaller portion. If over weight losing pounds is a huge step to getting BGL's down even w/o meds. Just the loss of 10 pounds can bring a big difference. I am only 165-170 and I would still like to drop another 5-10 lbs, but where I am is easy to maintain.

proteins, veg best, but even meat is good to getting the metabolism going and eat a source of protein every 3 hours as that is the rate of burning them. I have a pretty strict diet mostly chicken, turkey and broccoli, some fish tuna etc.. it is boring yes, but is also saving my life and you can get creative with cooking it. I also have cheat meals maybe once a week (BACON, hell I am human). Other foods oatmeal excellent protein and fiber, eggs within reason etc.

I started having Kidney renal failure a few months ago and lost my gallbladder shortly after. I have managed to get my kidneys back in range. So make sure she is getting plenty of water intake too. I assume high cholesterol may be in the mix of things not under control also.

Steve you're likely type 2 - non insulin dependent. oral meds..