Pop in a linux live cd/dvd and boot from it. Open up a terminal window and su to root and then type "fdisk -l" to get a list of the hard drive(s) on her computer -- find the name of the primary (windows) partition and then run "shred -vf -n 6 /dev/hda". Remove the cd and reboot.. Don't forget to destroy the cd. THEN plant some drugs in her desk and call the authorities (anonymously).
That'll teach the bitch.
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