OK just in case the System Restore doesnt work
Here is how you can save your daughters data
An external drive of some sort is required
Download
Ubuntu Live CD
Burn it to CD using
ImgBurn - Freeware
Boot from the Live CD
Choose English as language
Then choose try Ubuntu without any changes to your computer
Give it time to boot then navigate to Places at the top
Then choose Computer
Now navigate to your Vista drive
Then Documents and Settings, then Users, then your daughters name
Now copy and paste things like Documents, Music, Pictures etc to an external drive
That way the data such as iTunes isnt lost
Hope it works out
And just ask before you do anything
It might seem a bit hectic and confusing but its actually quite easy and ensures precious data such as music, photos etc isnt lost
Regards