abc1234 wrote:
.....And most of all, can grandpa help her? If so, she might learn more than just photography and he might learn more about his granddaughter...
Now that you asked, I can brag about two successes.
My granddaughters are now 12 and 14. A couple years ago I listened when there was a slight interest in making video. I provided the stuff needed. Now both, know what is involved and can make one when and if they want or need.
Shortly after video, came some interest in photo processing. It was largely fueled by interest in capturing a new puppy doing it's amazing tricks. Now both understand and can use photography.
When the video part was going on, I got the offer of a very tiny "grant" from an Adobe friend. Basically he offered to give me some software if I got my granddaughters to do a kid-to-kid tutorial on how to make videos. It didn't work. It was not their idea.
The trick as a grandfather is to follow and support, not lead. When they showed interest, I helped with what they wanted to do. They tried to help with the tutorial project, took it seriously but it was summer and interest was not there.
Oddly, I got to support an alternate project. They had interest in remolding a childhood tree house into pre-teen standards. We dropped the cameras and camcorders to pick up hammers and saws. Supporting their learning to use a nail gun will never be forgotten!
To summarize for the OP, the Nikon may get no traction. Software you pick out may get nowhere. If they discover their iPod will take a picture, you might be able to follow with helping your granddaughter discover how to use it. In fact, it might be that she would "discover" photography if you had spent your $400 on an iPod.
Grandpa, don't lead. Spoil her with support and interest in what she wants to do. My granddaughters know I'll back them unconditionally on anything they are interested in.