Healer didn't know how she was able to keep it together. She wanted to be hysterical. She wanted to throw a tantrum and weep and wail at the world, but that wasn't the sort of thing one did in the middle of a war.
They were dead. All four of them were dead. Dead because of the Starlights. And Galaxia.
And she had taken the one meant for Healer. Deliberately.
That was why Healer couldn't see it as sacrifice. She saw it as murder, and she wasn't going to forgive Galaxia for it.
Not until she could die too.