I don’t know the character, but I do know that often people can see a child-like heart. It may come out in the way she talks or her body language.
I think personally you are an adult when society claims you are. (18) BUT that’s only because you are acknowledged as one, it doesn’t mean you act like it.
What comes as you grow and mature is wisdom and understanding. I know some adults who are not responsible in the least and they often times don’t have “self-reliance”, besides we all grow old and will have to rely on someone to care for us (or take handi-capped people for instance).
Just because you “know” some 18 year olds doesn’t mean they’re aren’t more mature 18 year olds out there. Just like I know some adults who sit on their ass (pardon the language) and mooch off their families and the government when they could be out there working JUST like ME.
I live on my own and I bust my butt to do it. I AM an adult. The 40 year old next door in the trailer is too, don’t mean she acts like it.