Cersei, as a mother, has always been very protective toward her children. Now when she has nothing to lose, she is ready to rule and avenge her children.
Toward the end of Game of Thrones’ season six finale, “The Winds of Winter,” Daenerys Targaryen has her armed force. She has her mythical serpents (Dragons). Possibilities are more that Danerys Targaryen can have the Iron Throne.
Be that as it may, my cash isn’t on her. It’s on Cersei.
Cersei Played her Game of Thrones Well
Cersei has two critical encounters in the finale. The first is that she disposes of the main lady in Westeros who realizes what she has prepared to do. The keep going look on Margaery Tyrell’s face says it all — she knows she’s been defeated. She knows she thought little of her.
The second, and more vital, defining moment is that Cersei loses Tommen, her son born of incest. Tommen was the model of an irrelevant Game of Thrones character, yet to his mother he was the main thing keeping her human. Furthermore, now (or rather, a year or so from now, when season seven begins), we’ll see what a pitiless queen she’ll be for Westeros.
I don’t really know that Cersei is wholly a sociopath, but according to the prophecy she heard so many years ago, Joffrey, Myrcella, and now Tommen are dead. Others may see this as her giving up on everything, but she sees as an opportunity to avenge their deaths.
Cersei and Jaime Lannisters
In any case, now she doesn’t have anything to lose except Jaime. Also, there’s no telling what she’s able to do or the lengths she will go to (in fight or as a ruler). The expression of Jaime’s face all over when he comes back to King’s landing — a blend of stun and dread — signals that he knows damnation is coming. Check IMDB for more