So, I've purposefully decided to keep the relationship scores hidden, although there is a walkthrough here on Itch that will take you through Chapter 11. Generally, though, I'm not trying to hide much with Mayhew (aka the vampire). If you're polite, accept what he's offering and don't resist, you'll develop a good relationship with him. If you talk back or try to provoke him, you'll piss him off. In Build 0.8, I introduced what I'm calling the "Bell Tolls" mechanic, in which you can only really piss him off so many times before he loses patience and Alex loses... something more.