I'm stuck and completely lost at the clinic stage. Admittedly, I've already talked to that vampiress locked in the cell and used that switch to restore power, but I still don't know where to go next
Here is the full walkthrough for the game. It should help you work your way through the clinic.
https://docs.google.com/document/d/1VbSILz60_Yc7NyU-DRv3mrX0FVua3WSBD9nlN0Bf5jk/...
You ultimately need to find keys to get out of the clinic. To get one of the keys back, you need to get your whip back. The one players usually have trouble getting is the key on top of the pillar, which you find in a room on the bottom floor, (the one that is dark when you first arrive. ) You can knock down the chest from the pillar once you have your whip.