Otto sleeps peacefully. Janella already had released the demons from the seal that J There's ways to do that. She just chant on whatever that was given to her, offer her blood and that's it. Their mission was to go after the guardians. Killing them, offering their blood and heart to the gate's of hell and done. It will open again and everything will be in chaos.
She made sure to sneak all of the money that she withdrew for Otto's future. She won't be part of it, since she's going to die anyway. She took out the family heirloom from her husband's side. Although Otto wasn't her deceased husband's son, she's still thought of him as the heir. Although the empire had fallen.