my Dr also put me on diabetic control on my 4th month preg. Dietician gave me a list of food. asked me to eat 5-6 small meals a day, reduce as much carb as possible, take more meat and fish and veggies, no sweeteened beverages and also need to take the diabetic medicine twice a day before meal. but so far so good, baby is still under good weight control now that I'm on my 30th weeks soon.
you can ask the doctor or nurse what should or shouldnt food that she can consume. as im concern, should be less carbo intake. more fruit & vege, exercise daily. diabetec can affect to your baby also.
sze