Yes, she did it in a very clever way, there is censorship because we don't see a drop of blood, but the dialogues and the disturbing music (especially the one in the main menu 

) put you right in the atmosphere.
		
 
		
	 
I'm not sure about “not a drop of blood” (if, for example, you remember the very evil scene on the EvilDom route where Olivia (who has more than 11 points of evil) and Kane visit Mercy in one of K2's rooms, where she is offered to execute an old hermit man by pumping the air out of his cell.
But in general, I agree, Tess has not been seen so far in a tendency to bloody effects and mostly preferred psychological effects, which can impress much more..It's enough to remember the same scene on Juliette's yacht (Dom route).
BTW, I can't say I'm very happy about the presence of a guillotine stained with someone's fresh blood, which has already been glimpsed several times in the new screenshots of Dom from pt2..Sure, maybe it's just for entourage and atmosphere, but not a fact. Especially when Juliette is present in the same room.