Well, you know diabetes won't kill you and neither will hight blood sugar! BUT, Heart Disease, Arteriorsclerosis, Liver damage, kidney failure, stroke, heart attack, PAD, retinopathy leading to blindness, neuropathy and possible gangreen leading to amputation. This is a short list of things that are a real possiblility if you DON'T pay attention to your disease!!!! Thats what's so insideous about diabetes is that it can CAUSE all of the above, and not just one at a time!!
Its not your mom's disease nor does she have to suffer the consequences so why would you even want to consider that type of advice or participate in that type of dialog?
You do not say how old your mom is- mine is approaching 80, and she has the same mindset as your mom does. I think it may harken back to the time when type 2's were told to watch their desserts and carry on. My mother is unable to understand why I do not eat potatoes, bread, and other starchy carbs. She thinks I should stay away from desserts and hard candies She points out that my cousin Frannie cooks the old-fashioned way (lots of cream, sour cream, and butter) and is just fine. She doesn't acknowledge that Frannie shoots up insulin like a junkie to cover her old-fashioned cooking.
When she wants to debate me (which is often), I hand over the phone number of my doctor, ask her to call the office and to tell them how I should be handling myself.
Take care of yourself- it's the best way for you. If it means weighing and measuring food- so be it. If it means planning your schedule around your food or meds, then do that too. Thank her for her concern.