wow, she is tiny.... and eats so much.... maybe you or hubby were skinny as her when you were her age? maybe bring her to a chinese doctor & check her out.... sometimes chinese docs can see sth that western medical doc can't... i have one that's specialises in children & she's really nice. her name is Connie & her clinic is in causeway bay. can try to give her a call 2882-6999. if both western & ch doc says she's fine, then you don't have to give it any more thoughts & feel lucky that your child isn't overweight chowing down all those food!!!