Dr. found 1 pubic hair on 8 yr old daughter, sent her for hand/wrist xray. came back as bones of 10-11 yr old. should i be worried? what is this?

Bone Age: With a chronological age of 8, and "bone age"(degree of skeletal maturity vs. mean of age-matched normals) of 10-11 years, and a standard deviation of about 10 months, your daughter's bone age is advanced about 3 standard deviations above the mean for age. This means that her skeleton is more mature than 99.7% of other 8 year old girls. She needs a precocious puberty evaluation, talk to your doc