While you can lower your A1c with diet and exercise, once you have type 2 diabetes, it is a life long condition. That means that unless the changes you make are permanent and keep your A1c below 5.7, you will never be at a normal level without constant monitoring, and eventually medication at some point. There are people who start out on medication but make changes to their daily life that can get off meds and be diet and exercise controlled, but they are still considered diabetic. Remember, reversing diabetes is not the same as curing it. You will still be diabetic, the difference is there will be no need for medication because your A1c will remain at lower levels, as well your daily blood sugar. Insulin resistance is a tough one, as it is one cause of diabetes, and is treated the same way, but it doesn't necessarily meet the diagnostic criteria for diabetes. That's part of the reason that DD#3 can't see the diabetes educator, her A1c is below the criteria for pre-diabetes, and therefore cannot get that diagnosis, even. If your diabetes is there result of insulin resistance, then most likely you will have the resistance for the rest of your life. Basically, the diagnosis comes down to what your A1c is at the time of the diagnosis given, and no matter what that number lowers to, the diagnosis doesn't change. The only type of diabetes that is not a permanent diagnosis is gestational diabetes, which is fortunate for Rae. The down side is that it means her risk for developing diabetes later in life is slightly higher than if she didn't have it. It also means that she will need to watch for it more closely than if she never had it, and be more mindful of diet and exercise to help delay/prevent getting a different form of diabetes later in life. Fortunately, it sounds like that is pretty well covered for the foreseeable future.
Something else to watch for, especially for those with list, or no health insurance... Check your feet regularly for sores, tingling/numbness (including not being able to feel the top of a toothpick on any part of your foot that doesn't have thick calluses), and any change in your vision (distance, reading, driving and night). Any of those things need to be addressed by a doctor, as any of them could easily turn in to a serious issue without proper treatment.
Definitely do your research for diabetes friendly foods, either online, the library or the local bookstore. Everyone needs to be an expert on how their diagnosed condition affects them, and what their options are for treatment and maintaining it in a way that works best for them to remain as healthy as possible.