The LoVE Chart

[Amaterasu]

Tough call for Amaterasu... it very much depends on her environment.
With innately good people she would rather die than kill an innocent, she would probably be a 1, in some rare cases a 2.
People who are evil but not beyond hope of being brought back to the right path, 3, depending on how much hope there is and how aggressive they behave.
Against oni (innately evil individuals, mostly demons) and individuals beyond all hope of redemption she shoots right up to a 12-13. She doesn't like having to slay them and is very much aware of the consequences, but she cannot allow a monster to live if it kills innocents, or worse, spreads its curse.

Sabrina canonically would be 17-18 (although that did change later into the manga). In the Omniverse she comes to a 10-14. More than enjoying the act of killing someone she aims to achieve her own goals, and if someone is in her way, too bad for them. Consequences aren't her problem to deal with.