You have not mentioned age of Diabeties and present treatment.
According to her Glycemic level and present treatment we can plan diet.
Now she can start on : no direct
sugar Food.
Low carbohydrate items like Jawar, wheat, maze, cereals .
Salads, and low calorie fruits, if non-veg fish and egg.
Daily 30mins walk.
Take fractional feeds.
Consult me on phone for treatment and further details.