Is it healthy for my sister to weight 135 pounds and she's 14 years old and her height is 5'2?

BMI percentile: For adults, we calculate body mass index (BMI) to determine appropriate weight for height, regardless of age & gender. In children, we need to take into account age & gender, using BMI percentile w/healthy being 5th to 85th percentile. 135# on 5'2" 14yo female is considered overweight at 90th percentile (http://nccd.cdc.gov/dnpabmi/Calculator.aspx). Review growth curve w/Family Doc or pediatrician