So you are being in constant challenge. That is not necessarily bad and it probably allows you to outperform most other people!
Yes and no, yes because I really have to calculate and try to be strategic in everything I do, from what I eat, the exercise I do, how I will avoid stress... but no because of the mental fatigue that this brings, you are always close to a limit and it is difficult to control the exhaustion. Type 1 diabetes is a tough job,I recently saw a scientific article that mentions that a person with DM1 makes on average more than 180 decisions per day just to "survive", trying to replicate the work of the pancreas is very difficult.
My mother has DM 2 and I can relate to the struggle that people who suffer from such an illness go through. You need to make sure that you stay healthy and that your blood sugar and insulin level stays in the correct zone.
It's exhausting on a daily basis, but I'm sure your mother seeks to maintain a quality of life by keeping her glucose levels under control and always seeking to have healthy habits. I'm sure she will win this battle.