You act as if this girl is not dead dead dead. You are ignoring FACTS. The only bizarre part of this equation is your denial of reality. THAT is what is irritating.
How did I act like that?
You are letting visceral emotions impinge on your objectivity rational faculties.
Why are you affected so viscerally by the family, or others, not wanting to accept her brain death?
There seems to be something underlying your anger and emotion.