Things to consider:
Oriana owed Zaria a wish.
Zaria gave Oriana a powerful amulet that Oriana can use to battle Zaria. But then Zaria might end up not wanting to hurt Oriana.
It is interesting to see how these things unfold.
Zaria might ask Oriana to come back to demon realm to fulfill the blood oath.
But I still hope Zaria who genuinely cares about her student will betray the demon lord and change for the better.
I have mix feelings. I know Zaria is bad news, but she knows Oriana is powerful. she was there when Oriana had her demon awaken. does that means she only thinks the witch side was awake only?. or Zaria is having other plans on her own?.