If you use the admin account for your computer you could see what she saved - pics, documents, music, and any downloaded programs etc.

and you could make sure her settings are safe depending on her age.

For her online places it depends on if she saved her passwords on the computer and if she put an password on the password file in the browser settings.

Depending on her age I would set her profile/account up with her just to be sure it's as safe as possible for her to go online.

Hopefully her parents have made sure her settings at home are OK and not too much info is given on her myspace or facebook accounts.