Some people are all up in arms this expansion about "omg how cum Jaina is so mean she's so out of character, there's no reason for her to be like this".
Let's see:
Her boyfriend joined the Scourge in exchange for power.
Hey boyfriend slaughtered her friends and mentors in Dalaran.
She helped kill her own father in hopes of peace.
She was betrayed by those she sought peace for.
Her boyfriend tried to kill her and turn her into his Scourge servant.
Her city and people were vaporised from existence without reason once again by those she killed her father for
Her new city was betrayed from within by the very members she fought for to allow back in.
I'm probably missing a few points, but even with this, are people seriously expecting this chick to not harbor any resentment, hatred and desire for vengeance after all this shit?
And now she's travelling around on a haunted ship, constantly surrounded by memories of her murdered father. Comes home, her mother tells her to eat shit and die. Yeah no, I don't get it, how come she's so mean?