Surely someone is close enough to this lady to tell her, maybe she already knows but is finding it difficult to control?
Some people are under the impression that bad breath primarily comes from your teeth when enfact it mostly comes from your tongue, you can brush your teeth to your hearts content but if you have bad breath and you don't use a tongue scrapper you might aswell not brush them.
I used to hate flossing and scrapping (yes I do suffer
) but there are so many dispossible utensils available today that there is no excuse for anyone to have consistant bad breath...