My mother is on the verge of becoming diabetic anthing i can do to help stop it?

Probably: There is very good evidence that strict adherence to a program of diet and exercise can potentially reverse the path of pre-diabetes. This should be done with a diabetologist and probably a registered dietician. There is also growing evidence that the use of metformin in this situation is very helpful.

Weight loss : Pancreatic function tends to weaken as we age, so eventually she still may develop diabetes down the road of she is borderline now. 7-10% weight loss an reduce risk of diabetes or at least slow the progression. Ask her doctor if they believe metformin is right for her.