Board Thread:TV Show Discussion/@comment-25530642-20160526151302/@comment-1600847-20160526152556

Her father the Mad King was sane for several years on the Iron Throne. "His reign began with so much promise" Barristan Selmy said. Then he went insane, and the rest is history. The Targaryen tendency for inbreeding leads to lots of mentally unstable rulers. She could also slip into madness eventually too.

Already her tendency to burn people like her father did is a worrying sign she's taking after him.