Dormition means “put asleep”, an allegory for killing.
The Orthodox cult transports closer knowledge of what actually happened, its area being closer to actual events.
Mara (her real name) was a part of that group of liars and manipulators using cannabis to pretend miracles and gain political power in Judea. (See From an Einstein Syndrome to the People, chap. 2, and this other article)
A testimony by a monk, Epiphanius of Salamis, includes the idea she could have been killed, the monk is very prudent, afraid but eventually says it : “and a sword SHALL pierce through her soul” like silver weapons used against vampires in the later tradition…