Stannis's ruthless decision to burn his daughter Shireen to death, as a sacrifice to the Lord of Light, is a point of no return for his character — and seemingly a major change from the books, where Shireen remains alive and well at the end of the most recent volume, A Dance With Dragons.

Who killed Stannis Baratheon daughter?

Season 6. Davos walks not far from Jon's camp the day before the Battle of the Bastards. As the sun starts to rise, he comes across the remnants of a pyre where he finds the wooden stag burned but mostly whole: Shireen had it with her when she died, leading him to discover that Melisandre burned her as a sacrifice.

Why does baratheon kill his daughter?

Shireen Baratheon, the young princess afflicted with greyscale, was burned to death at the behest of Melisandre in an effort to ensure victory following a stealth attack by Ramsay Bolton.