Cool!
You can also show her these 4 free very easy progs!
Sketchup:http://www.sketchup.com/
Qubicle:http://www.minddesk.com/ (there is a basic free version) perfect for any "MindCraft Like" !
Algodoo:http://www.algodoo.com/
and for 3D sculpt : Sculptris ;)
http://pixologic.com/sculptris/

She will love them!