>>283043430
She was definitely shocked. And she is seen blaming herself for not knowing what's right and wrong in the Aquarium.
I think she's just portrayed as a bit emotionally stunted, even autistic. I know that's a meme but with her constant struggle to display her emotions, particularly affection, even to the point where she sort of relied on a crazy Devil as a crutch to do that in her stead, there's probably something to it.
It definitely makes her seem amoral but I think her guilt shows in her actions, like the fact that the "tripping" turned into a complex, and the way she tries to save a person she regards as being "no good" like Denji.