Dany was never pampered. She was a refugee for as long as she could remember, always on the move to avoid Baratheon assassins. Further, she was raised by an abusive brother who considered her no more than a tool for reclamation of the crown. The only commonality of their upbringing would be they never wanted for much.Sansa is 13...but so was Dany when she was married by force and look at all the crap she had to deal with. The difference between the two is night and day. The little I did read about Sansa, it seems to me I only got a peek at her before she grows. Although in the same book, Dany exploded with self-awareness and survival power. If anyone has survived, its her. Granted, everyone matures differently but still, both girls were pampered growing up and they turned out quite differently.
Inkling
Auror