The Maclurcans came to Sydney in 1901, when Donald leased the Wentworth Hotel which Hannah described as "with 30 rooms and an unpopular name". Donald died in 1903. The venture was an unusually large business undertaking for a woman in those days. She did all the cooking for two years with only the help of two Chinese boys in the kitchen. When her chefs refused duty at the Wentworth Hotel at one point, she locked the gates on them and took on new men. In 1909, Hannah purchased the lease of the hotel and undertook ambitious plans to expand. In 1912, she raised capital on the Stock Exchange by forming The Wentworth Hotel Limited, a limited liability company and she became its governing director — a position she retained for more than 20 years. During that time she bought land on either side of the hotel, and remodelled and rebuilt until she had achieved a modern hotel. She was actively associated with the management of the Wentworth Hotel until 1932, when she handed over responsibility to her son Charles Dansie Maclurcan (born 1889). Although Charles was an electrical engineer who used the flat roof of the hotel for his pioneering experiments in wireless transmission, he had been a director of the company since 1916. Maclurcan's daughter Evelyn Clara (born 1888, later Mrs F. C. Postle) was also a director. Throughout her life she was involved in numerous charities. During World War I, she worked for numerous comfort funds for the troops. In 1924, Maclurcan purchased a house called Bilgola at Bilgola Beach from William Bede Dalley, which became the focus of her life and a place to display her curios and antiques. On 17 August 1931 Maclurcan married Robert Lee at St Nicholas's Church of England, Mordialloc, Melbourne. Maclurcan Lee died at St Vincent's Private Hospital Sydney on Sunday 27 September 1936 at 75 years of age. She was survived by her husband, Robert Lee, her three daughters: Mrs. Ralph Moore, whose home was in England, Mrs. Spencer Watts, and Mrs. F. C. Postle and her son, Charles Dansie Maclurcan, of Strathfield, one of the pioneers of wireless in Australia. Her husband Robert Lee died on 17 October 1937 at Waverley. Her grandson Donald Charles Boulton Maclurcan (son of Charles) became a well-known architect. The Wentworth Hotel continued operation under the control of the Maclurcan family until 1950 when Qantas Empire Airways purchased a controlling interest.