She is not that amazing! Yes, there is a chance you will get diabetes, but only if you eat too many carbs. It should be easy enough for you to get back down to non-diabetic levels and maintain this.
The fact you are thin/slim does not mean you have no or very little insulin resistance. The visceral fat particularly round the liver is unseen. Plus she can't possibly know if you have too little insulin unless you have had the appropriate tests for this. The vast majority of us T2s have too much insulin. That is the major problem, and resolved only by eating many less carbs and high insulinogenic foods. She certainly can't tell just by your weight.
You say there is a chance I will get diabetes if I eat too many carbs. You are using the information that is thrown about in the media. This is not the case in my family it is due to lack of insulin as has been shown in other members. It is a gradual thing that takes time and I can only presume this will be classed as a subtype of t2 in years to come if it hasn't already.
In my nhs trust I have to be diabetic before I have the tests. It's a cost thing. I'm still only classed as prediabetic.
Just to note I am on a low carb diet, have been for over a year, do lots more exercise and the results are the same.
Also you mention the vast majority of T2 have high insulin, meaning there are some that don't. You're forgetting the minority, just like the media, and labeling everyone the same.
I was trying to put across the point I was actually listened to by my nurse, my family history was taken into account and a not at risk diagnosis wasn't based just on BMI.
The downfall in care came when the previous year the GP completely disregarded my comments, ignored my professional knowledge and told me to comeback in a year because I wasn't obese so shouldn't worry.
Then the following year the nurse couldn't use her expert knowledge to help me in anyway due to costs and that I don't fit the classic potential for DM referral pathway as I'm not obese. All I have to do is wait until I'm classed as having DM before they'll do anything.
This is where the better care to save all these people from premature deaths needs to start. Start listening to the patients. Start having the ability to treat based on your expert knowledge not on what some suit in an office who never sees a patient says is more cost effective at that moment in time rather than in 20 years when all the complications arise due to poor care earlier on.