nice style, interested in seeing what gameplay elements you're gonna come up with for a 4 year old
I had to do the same (audience was a bit older :P), but in order to have a learning experience, AND make it fun, that's hard work right there.

ofcourse it's your daughter, so that makes things easier :P

I dont know if it's a show or whatever, but try to take elements from that, and what works best, is to actually kind of one-on-one convert that to a game.
If you get what i mean... :P

good job so far, let us know the test results, if she liked it as well

regards,