During the fasting month, Muslim would try not to talk too much, so as to conserve liquid in the body, as they will abstain from drinking water over the next 12 hrs.
That lady who is harassing others most probably is not fasting, as she was happily screaming & berating others with her tirade, spewing saliva all over. She showed NO signs on observing the basic principles of fasting - self control & empathy for others, worse still to use the name of Islam to chastise others - which is unforgivable by ALLAH.
May ALLAH forgive her...Islam is a religion of Peace.
She must had been praying to other gods, serving the gods of Jihad & war or mere mortals whom are only village morons acting as gods on Earth with control over every aspect of life & death of mortals.