The misting x3 a day seems overkill but if that's what you've always done, then I wouldn't change it.
Were other snakes moved into the closet/reptile space as well? Are they all doing okay?
My first thought was something about the move, maybe a temp got changed or something in the new space that smells off?
Reviewed with my bf and his dad (they keep a few etbs) and their only advice was to possible try a different type of feeder, such as rabbit, guinea pig or hamster.
I hope she's okay!!