Hi rita ! If her period started and she feel pain give her diclofenac
. Don't use home made cloth as pad or high absorbing pads. use normal absorbing pad. Ask her if she has white discharge and smell, this make girl anemic too, need to check for haemoglobin
count. If she dont want to eat give her soup, juice etc. And consult with gynaecologist. If digestion problem persist consult with physician for further investigation. Take care of her. Bye.