Potassium deficiency may cause nocturnal leg cramps. make sure she eats plenty of potassium rich foods, like
- Bananas, apricots, nectarines, dates, grapes, or raisins
- Cabbage/broccoli family of vegetables
- Oranges, grapefruit, and their juice
- Potatoes and corn
- Saltwater fish (for example, tuna)
- Tomatoes and tomato juice
also dehydration may cause leg cramps, make sure she drink plenty of water or juice.