While that was pretty foolish of her to try such a thing, I only have the question of how in the world could you NOT have a backup of your files? Sorry to say, but its as much your fault you are in this position as your wife's.
I hope you get your files back, and if you do, BACK THEM UP.
I have 2 backup hard drives, plus servers work drive and I still always make 3 copies of each cd/dvd. Maybe I'm paranoid, but unfortunately I'm in this kind of business too long to rely on hard drives only... and/or on only one cd/dvd.
