Jonsa is CANON
GRR Martin has already said that Sansa is based in Elisabeth of York and Elisabeth I; the beggining and the end of Tudor dinasty. Elisabeth of York marries Henry VII after his rise to the throne, he deposed King Edward. It’s a political wedding known to became a love one. She is discribed as a great Queen and Dame, red haired and fair beauty, good mother, wife and beloved Queen. After her dead (at the birt of they 8th child, only 3 survived), he never remaried, and he is known to never had any lover during their time togheter. They both are discribed as stoical rulers, just and in love. Elisabeth of York is literally described as the rose who won a dragon’s hearth and they were relatives too. Now, Elisabeth I is also known for her red hair and beauty, a maiden made into a queen, never married, but her reign became known to be the goldden age.
I pretty sure, Sansa will give us great joy in the future, will survive to the end and she and Jon are the future of a more peacefull period in westeros and will rule together.