Try using the Mint live cd. Put it in the drive and reboot the computer to the Mint desktop of the live cd. Make sure your partitions are mounted and open the partition the files were on or where you were moving them to. Maybe, just maybe you might still have some or all of them.
Insanity: Doing the same thing over and over and each time expecting a different result.
Democracy is 2 wolves and a lamb voting on the menu. Liberty is an armed lamb protesting the electoral outcome. A Republic negates the need for an armed protest.