Yes, that last option is my little joke for you, +James Raggi. And to be truthful, I'm not one of those people who would freak out if my kid was interested in that fine product (which already is in my possession).
We looked at all of them and she decided she wanted the Swords and Wizardry rules. Since this is her first book, I figured the S&W Core Rules were probably the best option.
So, here you go. Lucy's first RPG book:
What? I can't hear you over this excellent retro cover.
Kudos, kiddo! I'm very proud of you and hope you will be as successful an RPG geek as your dear old dad.