is she 8 or 11?
if her first machine will actually be a second one in your home, then buy a machine you would want for yourself. she will be just as able to learn on an "adult" machine as on one marketed for children. kids are much more comfortable with technology than most of us oldies. i had a grownup machine of my very own by the time i was in kindergarten. i still have all ten fingers. :lol:
if her first machine will go with her to her house, get something "grown up" but very inexpensive. that way, if she loses interest - as children do - you won't have made too much of an investment for nothing. (if you know you could get it back, see option #1. ;-) )