Her parents divorced, and Arnold's mother, Susan Campbell (1872–1930), remarried to Albert D. Evans in St. Louis, Missouri in 1902.

Arnold, who was known for playing vamps contracted with Mack Sennett's Keystone Studios in 1913.

They divorced in 1919, and, while on a trip to China with her newspaper reporting brother, met David Toeg, a stock broker from a wealthy Syrian family.

According to Brent Walker's book, Mack Sennett's Fun Factory, she left Hong Kong for San Francisco in 1922 so her child could be born in America.

She departed from Hong Kong on June 14, 1924, and her son, Robert Raphael Toeg, who was reportedly the result of an affair with Nicolai Nicolaivich Merkuloff (1905–1972),[1] a Russian merchant, was born on March 15, 1925, in San Francisco.