Sansa laughs in spite of herself and shakes her head. She's always known her house words are a warning and not a boast but the way Wilhelm says it is very dramatic. Not quite as serious as Jon would be, however, and she says as much.

"You should hear my brother say it. He's far more serious than I am if you could possibly imagine. Most noble houses have words that are a boast, something like Ours is the Fury or Unbowed, Unbent, Unbroken. Not House Stark. Winter is deadly. My family...my family would be glad I could wield it as a weapon to defend myself."

Sansa misses her family intensely in this moment, misses those that are lost forever and those she's left behind in Westeros. Most of all, she misses Arya. Arya would be proud that she'd finally found a way to use a weapon."