I am a huge Game of Thrones fan. And I had no idea that there was a meaning behind Dany's hair. Its all related to the blood and gore that she has inflicted on various other characters.
Take it back to when she was having a conversation with her brother on why she had braids and he didn't. She put him in his place when she described the Dothraki way with hair. Explaining that braids are symbolic of victories. Click here for via LADbible