She first heard of the Faith at the age of 21 in 1899 under miraculous circumstances. [Mable Ives & The Mysterious Trolley Car Ride]

In 1903 she married Theron Canfield Rice-Wray and had three children. They lived in California from 1909 to 1914 where her marriage ended and she returned to the East.

In 1919 she met Howard Colby Ives and they married in 1920 and she became known to many who loved her as "Rizwanea". For nearly twenty years they traveled and taught the Faith often teaming with Grace and Harlan Ober as well as Doris and Willard McKay in both business and the teaching work. It was their entire life. They traveled through the New England states, through Pennsylvania, Ohio, Illinois, New York and many many more in Canada as well-always teaching, always leaving an established Assembly behind them." For example they came to Toronto in November of 1938 and stayed for about 10 months. During that time Mabel gave more than 150 lectures in Toronto and about 70 in Hamilton, Toronto's expansion goal. Howard, who was had had heart problems and who was rapidly losing for sight and hearing at the time, complemented her abilities by doing personal deepening with receptive souls. [TMLF62-67, SEBW139-154]

• See Fires in Many Hearts - Memoirs of an early American believer by Doris McKay.

See the story of how Mabel resolved the situation when she could no longer tolerate the itinerate lifestyle in the story When Mable Ives Could Endure No More, She Prayed .

See the tribute paid to her in the Canadian Bahá'í News No 202 November 1966 p4.