I raised my kids on GUIs and they love it. (I don't disagree that exposing kids to the command line is probably a valuable thing, but the idea that kids who learned to type a magic command to launch games on C64 have more useful knowledge than kids brought up on Mac/Windows is frankly stupid.) Last night my five-year-old daughter complained her iPad was out of battery so I gave her my Nexus 7 and she had no problems…
The command line kids will adapt more easily than the GUI kids. The GUI kids will probably end up as tavern wenches in the Orion sector, or working in the beryllium mines.
Don't let your daughter end up in the beryllium mines. Teach her the command line.