I will advice her not to talk that much loudly, as it is not letting others to express their feelings.
A soft tone, reaches even a hard person.
So, I will ask her, first to try to speak politely.
As this will also allow others to express their views.
I would ask her, what will happen, if everyone shouts other than her, and ask how her, how she could express her views.
This makes her to feel, and change her. I will give this advice.