Who is Rose Blumkin from Buffett: The Making of an American Capitalist and what is their importance?

Affectionately known as "Mrs. B," Rose Blumkin was born Rose Gorelick in Russia. She married Isadore Blumkin who immigrated to the United States just before World War I. She was to follow, but the war broke out and she could not get out of Russia. She managed to travel to the Chinese border and talk her way across and, eventually, joined her husband. They settled in Omaha and she was able to subsequently purchase the Omaha Furniture Mart which she ran with a passion, driving out all competition. Buffett bought the store, but Rose and her children and grandchildren continued to manage it. She left the store following a dispute with her grandsons and set up competition next door. Eventually, all was resolved and Mrs. B. returned to the fold. Even though uneducated, Buffett thought her to be one of the most astute business people he had ever known.