[data recovery] Need help ASAP!

[Bo]

Co-worker just deleted a folder of production files (moved to trash and emptied trash [don't ask]. She immediately realized her mistake and hasn't done anything on that machine (27" iMac 10.6.8) for fear that deleted files may be overwritten. There is no back-up [don't get me started]. Drivesavers is around the corner and quoted $900-$2000 based on description of events. She's leaving for Europe this evening so time is of the essence...

Any downloadable software solutions that people have had success with? Disk Drill?

Thank you thank you thank you!

-Bo