Ay, I can understand the worry, mama! But honestly, 16kg at that age sounds pretty normal to me, height matters a lot din, kaya best if you bring her to the pediatrician para ma-check properly using the growth charts; they'll tell you exactly where she sits and kung kailangan ng adjustments sa diet. In the meantime, make sure she's eating balanced meals with protein, veggies, and healthy fats, at kung active siya at playful, that's usually a good sign na okay lang siya!