Brendan Moody wrote:
Based on the personality the writers have given Catelyn thus far, and their general reluctance to embrace Martin's more grotesque characters, I shudder to think what they might make Lady Stoneheart into. Maybe a raspy soliloquy about how all her troubles are because she wasn't nice to poor ickle Jon Snow? Or a version where the vengeance is Thoros' idea and all she wants to do is mother everybody in sight.
I'm hoping that they're actually going this way to more fully pull the rug out by going with the corruption of the mothering instinct that causes, for example, female terrorists to be more deadly than the males.
(Seriously, this is a real thing - security forces around the world are advised to shoot women terrorists before male ones in hostage situations, because the women are more likely to start killing hostages)