I don’t have any “Software” folder under C:\Users\<username>.
Searching from there, the only result I could find was C:\Users\<username>\AppData\LocalLow\HotPink Games LLC\Lewd City Girls, yet that’s still not the right one; deleting it does nothing.
Which OS version are you on? Might also be able to click start, type "regedit" and open it go into <username> then Software, etc as the original one states. But it could be slightly different., or a hidden file.
I think that’s actually the first time I see a game use the Registry instead of a regular save file, you should have led with that. A lot of people probably don’t even know the Registry is a thing.