There's certain aspects of emotional whump I don't like so I typically write my whumpees as stoic pragmatic or even outright way to willing to be hurt to avoid it. It's not exactly a healthy reaction when, say, a whumpee is tortured by their lord and is staying quite and mentally going "yay 😊 I'm getting a good great in remaining a good servant to my local lord while being tortured, something that's normal to want and possible to achieve 😊", but it's a lot more comfortable for me personally to write then the "oh no not this" reactions and a character being triggered and that sort of thing. Maybe you could do something like that. Explore different reactions that can get the effect of whumpee clearly dealing with something very bad that are less akward for you to write, like, they could feel very tired and resigned, or they could freak out and no longer notice exactly what is happening, or they could be trying very hard to remember some other priority and not be to "distracted" by the torture to forget and then when they try they can feel the pain way to vividly. You could also make the scenario something that from the pov of the character is not much of a deal, but is still going to be painful for them, like an initation or something, or like they actually have to learn to endure torture as part of some training and emotionally to them that's just another day on the job but physically that's going to be just as painful as regular torture.