青い氷の城 (Aoi Koori no Shiro)

Background
She who was betrayed by her loved one feels...

A girl is suposedly in an unhappy marriage. She commits suicide by slicing up her arm and whilst her body temprature drops, she envisions an "Ice castle" and "the girl with light blue eyes". After her death, her husband is accused of murdering her.

This was originally part of the Dark Woods Circus Series, but was scraped with the release of the novel.