If a 19 year old can be a child then a 15 year old can be a woman.
Does not logically follow unless you’re saying the terms “child” and adult “man”/”woman” are meaningless and I won’t give you that. She may be a mature 15 yo but I guarantee you if you sit down to a conversation with her you will know you are talking to a child. I say this with some authority after having many, frequently exasperating, conversations with my wife’s 15 yo daughters and their friends. The 19 yo with a gun is an adult in every respect even if he’s making foolish/childish decisions. He’s only a child to liberals trying to excuse his behavior.