NA Localization:
It was capricious and mysterious—something no ordinary human could ever see. A strange being that had haunted tsars across generations.
This sprite, or Elemental, or whatever it was, appeared beside the Grand Duchess when she drew her last breath...as if it were trying to keep her alive in the face of eternal night.
Fan Translation:
"Something" moody, incomprehensible, and invisible to the ordinary human.
"The mysterious thing" that has been haunting the Tsars for generations.
That fairy, or perhaps dead spirit, gently snuggled up to an imperial princess in her final moment.
As if to bind itself to the threads of her life, even as the eternal night is coming.