we don't know that someone didn't try to tell her, but she is, after all, other than dave holloway, the person most affected by this tragedy and may feel she should have her say regardless. to her eventual detriment or not, maybe she was not able to be dissuaded.
That's a good point. I understand that people handle things differently. If I were in her place, I can't imagine being able to stand there and speak coherently without spilling over with tears every second.
Let me say, it irritates the spit out of me that Greta keeps saying Halloway!