I doubt it. Assuming that diagnosis is correct, she has MODY, Maturity Onset Diabetes of the Young. It's characterized by being more than a little overweight and insulin resistance, i.e. a person uses a lot more insulin than a normal person to get their glucose out of the blood into their cells where it's used for energy or stored as glycogen in liver and muscle or converted into triglycerides, i.e. fat.
If she got MODY, she needs a serious dietary intervention plus exercise. Some type 2 diabetics can control their blood glucose with diet and exercise.
If you enter Volek JS, Feinman RD into PubMed's query box, then you'll do an authors' search on two writers who have written 11 articles showing the benefit of dietary carbohydrate restriction.
She needs to quit soda flavored with high fructose corn syrup. and limit fruit juice, especially juice like apple juice which is basically a solution of sugars in water. Diet pop is waste of money, IMHO. If she's craves sweet drinks start cutting it with club soda or seltzer and add ice cubes. Some people are literally addicted to sweets. Then she'll have to be weened off sweets.
Have her watch this lecture, Robert Lustig’s “Sugar: The Bitter Truth” lecture "Fructose is ethanol without the buzz." Lustig is down on sucrose too because it's part fructose. It's almost 90 minutes, very well spent. It will help with any biochemistry and physiology she has to take.
Thanks for the reply. It was very informative. She’s not over weight, and doesn’t drink sugar drinks. She was a 6mo baby. I don’t suppose being premature has anything to do with the diabetes. We were all shocked as she has always been so healthy. Thanks again.