The official recovery procedure is described here: Qu-Drive Recording Recovery Procedure
If you already used another tool, that procedure may no longer work.
In any case you should see the files within the directory path and they should be empty (since the headers were not updated correctly due to the power loss). If you do not see the files, some other, maybe automatic, “recovery” mechanism may already have eliminated them. The more modern OS you’re using, the more likely you have such “intelligent” auto-recovery running in the background.
Tip for the future: Always run Qu+dSnakeStuff via USV…