Like Ix said, They certainly got the part about what else starstuff does to you—the floating, the happiness, the sounds, potential immortality and permanent flight—right.

In Peter and the Starcatchers, Peter gained the ability to fly and never age because he handled a trunk full of leaking starstuff. The overexposure (allegedly) made him the way he is in Peter Pan (though PatSc is more like an AU prequel of the book than anything).

Aside from flight and immortality, starstuff can turn birds into fairies and fish into merpeople. It also mutated a salamander into some sort of giant creature that escaped into Loch Ness. Along with that, it can also grant people enhanced strength and senses, be used to power rockets... basically, it's the Deus Ex Machina to end Dei Ex Machina.

I'm trying to see where I could possibly fit in a mention of what starstuff does without turning it into an "as you know" approach. I did kind of think this was enough, though:

“Aside from ignoring the part where handling starstuff with your bare hands is a Bad Idea, it seems like this author’s pretty familiar with the canon, from what little we’ve seen,” Ix agreed, nodding. “They certainly got the part about what else starstuff does to you—the floating, the happiness, the sounds, potential immortality and permanent flight—right. And I suppose if they were going to later show Kiki had similar ancestry to Peter, then her being able to handle it might be excusable. Maybe.”

Unless you think there's more that could be included?