Being honest with yourself is important, but being kind to yourself is too.
Women of a certain age can be prone to weight gain, and sometimes depression. Compounded by physical problems that restrict mobility, perhaps even some caring for others tasks, and there you have the perfect conditions to stop taking care of yourself.
I know this, because I have experienced similar. It is not easy to deal with, especially if food is used as a crutch, or even as a punishment. Having admitted, openly, here that you do binge eat, and then restrict your food intake to compensate is telling us you have disordered eating patterns. I think you have taken the first step towards solving that, by telling us. That is a brave thing to do. Could you also seek help from GP? Help is available, and there is no need to feel ashamed for needing that help. In the meantime, perhaps consider meds to bring down the HbA1c? It needn’t be a permanent solution. Just a starter to help you get back control.