Apparently height is not too less though below normal expected. Parents' heights are good. I would suggest to maintain a growth chart and see how much she gains over a year with 2-3 monthly measurements, if no other complaints. Improve nutrition too. You can give pediasure, however a balanced diet is equally important. If her pace of gaining is normal with all these, you need not worry.
Next Steps
Regular growth monitoring and plotting on growth charts.