Who is afraid of whom in the abode?
Some people are afraid of other people, or have great respect for them and that influences the behaviour, not at least in the Abode.
Everybody (or almost everybody) in the Abode have a great respect or outright fear for Opal, even though her behaviour since arriving have been humble bordering on saintly.
Alma and Lir are outright hostile in their fear for her, Bel have great respect for her, even though she cracks a lot of jokes about her. Tomomi will say that she have great respect rather than fear for her, but prefer not to be alone when she is around, the same goes for Ren who gets really nervous when she is around.
Those who revere her is Calandra, Palatyne and Shiomi and possibly Erendil, Candra loves her of course.
Opal fears Tsuki, calling her a demon of demons. Even though they have a truce, she is cautious when Tsuki is around. She also fears that others might be a bad influence on Candra.
Tsuki herself is cautious of Opal "Sie haf big hoofes!", although she appears to adore her as well. She in her turn is however very afraid of Shade. When it comes to the other denizens of the Abode, about half of them treats her like a cute child, albeit of demonic heritage, that can be pampered and offered treats. The other half treats her like scheming demon in the guise of a cute child, and would prefer to have her locked up in a demon proof cage.
Although she is on talking terms with Growf she seems nervous around him and is very quick to get away from him, but maybe it is because they are on talking terms (nobody else is known to talk with Growf)...
Shade is the one who never seems to be afraid of anyone or anything, but once when asked what she might fear, her answer was "the darkness" to everybody surprise.
Evaleigh is afraid of the Hyperborian gang (who refer to her as Tsuke Niko (漬け肉, "pickled meat"), with whom she have a score (or more) to settle. She feels inferior to Opal and those around her, secretly envying their strength, and even if she think that they are old fashion and weak in their attitude (if she had their powers, she would show the world... etc...), she hides or flee if they come to close to her. It's complicated...
Wotatease is special chapter, nobody is really afraid of either her or her dragon, but everybody is very afraid of what she might do if she is cornered, confused, challenged or just bored. The result is that most people are very keen to keep her happy and relaxed (not as easy as it sounds). It's not a good idea to get her drunk though...
Nobody is afraid of the Old Magician, but at least they respect him... Old Magician himself is not really afraid of anybody of the denizens of the abode, at least not while in the abode, but respects them and worries about them...