What do I buy the roleplaying kid who has nothing?
To start out, just buy them the basic gamebook of the game you’ve chosen (ask a dealer or a gamer for help if necessary) and avoid buying too many other supplementary texts just off the bat. A kid’s first RPG can be a daunting experience, and you don’t want to overwhelm her. If you can find a “Starter” deal that will give you dice and all the gamebooks needed to play, go for it.