Mild spoilers ahead!
In Worm, Panacea falls in love with her step-sister, Glory Girl. Part of Glory Girl's power is an emotional aura that, unless she turns it off, makes people around her view her with adoration if GG is in a good mood or awe/fear if she isn't. I think at some point Panacea claims to be immune to this aura, though I don't have a source quote handy.
I've seen a number of fan discussions (and fan fiction) which seem to take it for granted or explicitly claim that Panacea is not in fact immune, and only loves Glory Girl because she went through puberty constantly being hammered with Glory Girl's emotional aura, effectively brainwashing her.
Is there any evidence in the original material or a statement directly from Wildbow supporting this theory, or is it merely very widespread fanon?