If they can send ONE Hello Kitty doll into space....

…why can’t they send them all?
Easy answer: Because there’s already enough debris in LEO, and we don’t needc to exacerbate the Kessler Syndrome.
http://gma.yahoo.com/blogs/abc-blogs/girl-blasts-hello-kitty-doll-space-191135994--abc-news-tech.html

So they really sent it up in a high-tech balloon. Impressive (especially for a pre-ten), but hardly “blasting off” into “space”.
The part that caught my eye was this:

Phew! Good thing it landed in a tree. How’d you like to be the first person killed by a Hello Kitty doll falling from a height of 17 miles?*

*Yes, I know it probably wouldn’t kill him/her. The only person ever hit by a meteorite only got a bruise.

First: Did they call the fire department to get it down?

Second: Don’t discount the psychological trauma of being assaulted by a (near) space-based Hello Kitty weapons platform. If, after a few years of paranoid sky watching and panic attacks every time they leave the house, the person struck were to commit suicide, would it count as being killed by the Hello Kitty doll?

Third: Next time, she needs to land the doll on the moon. Then the Internet will enshrine her ponified image.

Still pretty damn good for a 7th grader. There may be hope for the future.