Milk

My 7 year old child is growing up so fast and even her feet is getting bigger. For her age, she is sometimes mistaken as a 10 year old girl and her feet is almost 5 in size. However, she's getting thinner, too. She used to be chubby but now she's like me when I was her age ~ skinny. I was wondering if her current milk has to do something about it. She used to drink Enfakid and no matter how expensive it was, we still bought now. But now she's drinking a milk which is cheaper but nutritious because it's also mixed with vegetables. We might let her go back to her old milk and see if she will gain a little weight. But if not, perhaps she just got her structure from me, tall and lanky...