Yknow, maybe we should be thinking about us here, too. About the thread, that is.
While I like to think Sabrina has grown beyond being purely "SV avatar", she still inherited her characterization from us, from SV.
Here at SV we love connecting with our Super Special Protagonists, who can do things nobody else can, who inspire awe and adoration from those around them. We write chapters and omakes about characters just reacting to how cool and wild our protagonists are, and when we play quest protagonists we love to have them do dramatic things and monologue like supervillains because we love seeing them have that spotlight.
And if that's where Sabrina came from... perhaps it isn't so strange that Sabrina would feel jealousy at the prospect of being less special?