Existential despair would have to be read in since canon doesn't focus enough on her and she's prone to clam up about those things somethin' fierce, but there's death aplenty here! The immediate recovery after any resurrection is always offscreen, which seems as good an opportunity as any for 'pretty janked up and by oneself and Distressed'. (Memory issues are also a thing, but she had to endure that silently and it was a quick process so that's sadly a miss, alas.) Off the top of my head, the aftermath of stake death sounds like the strongest shot? Watch a bunch of people chuck something charred into the swamp and then out crawls a Misty, rattled and dazed and just......chilling there on the ground until the memory ends.
(OR THE POST-HELL 'I DON'T KNOW WHERE I AM ANYMORE', WHICH IS A THING THAT DESPERATELY NEEDS TO COME UP IN GENERAL.)

She's very resigned to death as some kind of 'many options but all of them are horrible nothing good actually exists' so a peaceful death would 10/10 fuck her up in a pleasant way! Also Halloween Town because I'm weak and she deserves to see a skele-dog