So far, Daenerys has promised her will be a peaceful reign in the Seven Kingdoms when she takes her ‘rightful’ place on the Iron Throne but that now seems wishful thinking.
And so, despite the surrender, the Mother of Dragons decided the destruction of King’s Landing had to happen.
The question is why the change of heart?
Fortunately the show’s co-creators David Benioff and D.B. Weiss have revealed the real reason why Daenerys went rogue in the penultimate episode.
It turns out that Dany felt betrayed by all she knows and with only a dragon she could trust, she took to razing all else to the ground.