Do i act like a grandma if i tell my friend this? Grown ups this is for u!!?

okay so i have this friend and she is close to me like a sister. she's a good girl n never had before. she's not naive or stupid @ all when it comes to guys. but since she's sixteen she thinks she ready for . she tells me that she is going to get a paps mere before she haves so the doctors can tell her parents that she isnt ually active. and then she is going to have . I WANT TO TELL HER SO BAD TO SIT DOWN SOME WHERE!!! ITS NOT THAT SERIOUS. OPEN A BOOK AND READ!!! but i know that she would get mad. so what should i tell her to do? is that a smart thing she is doing??