What should be the statistics for a 13 year old girl?

well, it all depends on height. Say, the young lady is 13 and shes about 5'2, 125-145 lbs are usually the normal stats. But if some one is not in that stat dont get shocked because every body is made different. If the 13 year old girl is between 5'3-5'6 weight will vary. But it is mostly a tad higher then 5'2. The numbers may sound large, but when some one says you are fat you need to tell them your height.