I am posting this so that this thread doesnot die.
If you had XP, there was a free ware called "keyboard tracer" that will trace each and every keystrokes . But I dont think keyboard tracer is compatible with win 7.
One thing you can try is , get "identity theft protection" software. I guess it is free, but not sure. Our university used to supply it for free though. Run it , and you will see all the passwords , id and any number that matcher credit card/ssn number iin the system. Hope it will give you some info about her account. ( you can try megaupload or rapidshare for free download, file is not big)
Last thing you can try is , Just search on google and spend about an hour. You will find "cracking mozilla". It is not actually cracking, however, you will find a page that gives you step by step guide to modify mozilla( javasxript file) and you can make mozilla to save all the users account info ( /password) without asking the user. After you modify let her use the mozilla, and her info will be saved . And I bet you know how to see saved id/password on mozilla. Or you can use identity theft protection again.