I was listening to Radio westeros today on their latest episode about prophecies .. They came up with this theory Daenerys mother Rhaella as Quaithe . And personally someone who believes quaithe is sarella sand...I like this one better .. It will add to nice emotional angle and mother daughter bonding .. It gives dany some happiness if she get to see her mother and they knew each other and I guess they can disappear after the war with reminding dragons to far side of the worl