Help!! My daughter weighs more than me and even her dad!!!!?

She went for her physical today and got weighed. She weighs now 189 pounds!! (about 14 stone) I weigh only 130 and her dad weighs 160. When I last weighed her a year ago she weighed a normal 120 pounds but she also has shot up in height. A year ago she was 5"4 and now she is 5"6. She is 13. I noticed she was putting on a bit of weight but she's going through puppetry!!!! She also has high blood pressure now. The doctor just put her on a diet but could there be a medical reason she has put on all this weight. She doesn't take any medicine. Thanks in advance