The things I can’t get past

I was originally very supportive on of the Defense. She seemed like she may have gone through psychosis.

But I can’t get past her calling Patrick and answering his question normally after the murders.

I can’t get past her going to multiple medical professionals and not giving time for medication to work.

But mainly, I can’t understand why just because she heard a voice telling her “this is her last chance” to kill them, why she would? Like did she feel the voice was threatening her? I’m confused about this part; and to me feels like an after the fact reason she made up.

I am having a hard time understanding why so many people support her, but I can’t find any evidence she was in psychosis except her saying she was? If it’s true it can present itself in so many ways, including making plans and talking normal, what stops anyone from claiming this?