Everything Went Dark

The two ran (more like floated quickly) over to Addie. They tried to speak but couldn't. Addie looked surprised to see them. She couldn't speak either. After being unable to figure out how to communicate for a few minutes, Addie got bored and started to float away again. Elliana and Emma started to panic. How would they get Addie to stay with them? And then Elliana remembered how she accidentally killed and then somehow revived the majority of the human population. How did she remember it? Plot convenience, of course!

And that way of reviving people was with...