The despair bro...
So, is she from the past being possessed by her from the future? Doha did realize at some point she was losing her mind if so. And she is the one that caused her own karma (probably).
Why this types of stories with insecure, twisted and cruel lovers are never actually psychological? As in, not analytical nor reflexive. I'd love to see that piece of shit of a man evolve as characters and work through his insecurities and guilt. See him realize his wrongdoings and come to terms...