Hi. Early morning sunlight exposure is a good source of Vit D. Give green leafy vegetables and fruits. Give milk and milk products.

If your child has vitamin D deficiency with bone changes, you require a proper consult and treatment with supplementation of vitamin D in a proper dose. Major source of vitamin D is sunlight (to expose in morning sunlight for at least 30 minutes). Dietary sources of vitamin D is majorly dairy products and non veg diet. You can supplement her with commercial preparations of vitamin D with required dose after a pediatrician consult too.