her weight is 15 kg, and height is 115cm, what should I do

A. Namaste Father, The weight seems very less for the age , how has her growth pattern been, from the time she is born? is she a preterm baby or a low birth weight? prefer to give her good quality protein foods such as soaked nuts and seeds , also you can give eggs , chicken if preferred , dals, legumes such as rajma , lobia etc , fruit milk shakes , millets etc