|I don't believe you'll have much luck remotely.|
The only thing I can think of you can try is open the recycle bin and then try to restore said files. If you don't see them there, you're pretty much pooched.
Date recovery like this usually involves software you have to install either locally on the computer, or else you remove the drive and give it to the recovery specalist and they do it on their hardware.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.