He told her, amongst other things, that the white man did not care about the Aborigines and that the white man encouraged their sons not to obey them any more. The other men outside also joined in. Nancy had learned not to be scared in this type of situation. She gently but firmly stuck to her decision not to treat the man till he was sober. Eventually they all went back to the camp.
Aborigines traditionally avoid confrontations unless serious tribal matters are involved.
They don't adhere to this custom when they have consumed too much alcohol. The man was offended because Nancy refused to treat him. In order to save face he felt he had to assert himself in front of the other men. Aborigines can't hold their liquor like the white man can. Alcohol brings out the worst in them.