Originally posted by awscreo I'd get a used Oly M43 camera, I think there's one in the buy/sell section here. It's small, compact, durable enough for a kid to try it, and lenses aren't too expensive (oly 12-60 or panasonic 12-42 etc). There's also room to grow there
OP found his daughter a very cheap *istDL (a few posts up) and already has a normal prime for it. He's done, at least until he knows for sure how serious she is about it.
I certainly can't fault your suggestion as a longer-term solution if she turns out to be rabidly enthusiastic, though if she can handle the *istDL now, growing into its more advanced functions or into another Pentax DSLR won't be an issue for her, and may make more sense for OP's family than a separate camera ecosystem . She can strike out on her own when she's a teenager or something.