Obvious rule one is to make sure she only has a limited user account so she can't install any programs (such as another browser), then disable the clear history option in Internet explorer.
http://www.techjunkee..._IE_clear_history.htm
then you can simply check the browsing history in IE at any time.
(if she uses MSN messenger it's probably not a bad idea to make sure that save conversations is enabled in that too, then you'll have a history of all her chats)



