I disagree with StrangePackage’s point that “Give her options, let her pick. Once she has made her base decision, give her more options, and again, let her pick. This is her character, so let her decide how it works.”
As a new player she doesn’t have the knowledge or experience to know the consequences of those choices, to go that way you might as well pre-generate the character for her since, as the DM, you will know what will fit in your game the easiest.
If she doesn't make those choices and then learn the consequences of them, then she's not really learning anything.
Learning to make your own character is kind of a big deal in this game.
Getting handed a pre-gen and having to have someone constantly explain it to you because you have no familiarity with the choices that went into creation is basically dooming your new player to eternal novice status.
She will make mistakes. We all did. That's how we get better at things. To quote a wise dog, sucking at something is the first step to being kinda good at something.