Guess her weight if height is 5'2?

You sound like you have an obsession with weight and body Image. I’m not trying to have ago at you , but you really should get to the doctor or a therapist as it’s unhealthy to be this obsessed with it. All of your questions are based on body weight and image. It sounds like you might have eating problems, loads of people have but they aren’t fashionable or trendy , they are a serious illness and they can kill you. I had the same problems when I was younger and I still have , I used to post photos of myself asking people if I was fat. But now I don’t do that , I had problems with food as well. I’m not saying you have an eating disorder but it seems like you have as I also know people who have done similar things when suffering with one. What ever the reason is , nobody on the internet is going change your mind or help you unless you are willing to help yourself. You can’t always go by opinions on the internet and even I might not be right but you really should ask a doctor they are qualified in the medical field and they will tell you what weight you should be. I’m nearly 19 and I weigh way more than you.