In the early seasons, she got sold, raped, had to eat a fucking raw heart, lost her husband ( the rapist one) when she started loving him, her babyand got betrayed a bunch of times then in the more recent seasons, she lost 2 kids, 2 long standing friends and advisors got betrayed again by the same people she help saved. Yet people are surprised she went crazy.
Sansa witnessed her (prior) love behead her father. She was held hostage by him, and forced to mary Tyrion, until she was handed over to the sadistic maniac that murdered her mother and brother, who proceeded to rape and torture her. Then she lost her younger brother at the hands of the same man, and found out she had been betrayed by Little Fingers. Theon who saved her life and finally returned to her was killed as well, and every remaining family member she has either died, left her, or "is something else now".
If Sansa had snapped and murdered all the women and children down in the crypt, you can also find some reason to point to as the cause. But without a proper buildup with a gradual descent, that's the absolute worst way to do it.
You could tell that they were maybe going in this direction for a while now. But executing slave owners or enemies who refused to yield is a far cry from innocent women and children who had surrendered. Considering how little the writers seem to care about having things make sense, 'surprised' isn't the word I'd use to describe my feelings about how this was handled.
Emilia Clarke also doesn't seem to be happy with how things turned out for her character:
Peter Dinklage also point out how Tyrion apparently wasn't smart enough to realize that a crypt full of the dead isn't a good combination with the Night King who can raise the dead. I think every single fan comment I saw prior to that episode expected that to happen.
Last edited by Hiku - on 13 May 2019