You know what made me upset today? People who laugh at Sansa and joke about her so willingly letting Jon go after he has left the North to her. Like, “ok bro safe travels”.
Last week everyone hated on her because she “undermined him” by voicing her perfectly reasonable opinion in her ancestrial home. This week she agrees with him (angrily, but she does) and is willing to help him, to serve him as the Lady of Winterfell and Queen in the North like he asked her to, and she gets hate for being “power-hungry”.
The worst thing she could do was to keep screaming and crying as he was leaving. Instead she collected herself and submitted, although it was so obvious that she was, in fact, scared of being left alone in the North. That whole thing came unexpected, but she decided to be brave.
I think that the look she gave him meant “I’ve got your back” rather than “Oh finally I get to govern something somewhere”.