Board Thread:Questions and Answers/@comment-1788837-20160629012117/@comment-24491781-20160802220054

If we look back at Seasons 1 and 2, Sansa deliberately denies her ties to her family and is so head over heels into Joffrey - even to the extend of calling her brother and mother a treasoners as well as her father. Joffrey ordered her father to be executed and yet she still didn't care about her family coming to save her after.

It would fitting if Arya and Sansa have confrontation or standoff at least. But at the very least we can hopefully expect one of them to not survive.

Writers have also explicitly said that there will be 1 Targaryen, 1 Lannister and 1 Stark to survive in the end.