It's a problem I see in a lot of literature unfortunately; where an author has trouble writing a powerful woman, they either write them like a man or like a petulant child. Thinking back on the three powerful women Christie Golden has had the honor of writing for, they all behave relatively the same and it's all pretty unbecoming. And now that she's working for Blizzard as a writer for the game and not just the novels, a lot of the characters have gone downhill.
#1: Tyrande Whisperwind
She was a main character in War Crimes, acting as the Alliance's prosecution against Garrosh Hellscream in his trial. She lost her temper easily, over-reacted to not getting her way, and did not at all come off as a thousands-of-years-old priestess. I'm surprised she didn't stomp her feet and slam doors, to be honest.
#2: Jaina
Jaina's had it rough for a long time, but she's always taken her duties with the Kirin Tor and Dalaran very seriously. Up until she didn't get her way in Legion and the other council members out-voted her. So she threw a fit and ran away. Can't get what I want? Then I don't want anything at all!
#3: Sylvanas
Arguably one of the most intelligent leaders (devious too!) She's also undead, and the undead have trouble feeling emotions, Sylvanas included if you read her bits in War Crimes. But suddenly she can be angered to the point of burning down her political advantage? It just seems too out-of-character for her.
Are there any other characters that have been turned into emotion-fueled children that lash out when they don't get their way? Or am I seeing patterns where there aren't any?