The mission for hunting a group of Yoma was a month ago. Ophelia sensed Hilda and excused herself. Miria was close by fighting the group of Yoma. Hilda likely couldn’t sense Miria because she was trying to focus on controlling her own yoki release which had become uncontrollable at that point.
It’s not clear if Hilda had already awakened. She likely hadn’t otherwise the other warriors close by would’ve sensed the enormous release in yoma power. It also explains why Ophelia had waited for a mission before hunting Hilda. She was keen on making Miria lose her mind in grief and awaken.
Miria found Hilda’s sword nine years after her death.







