Nicole Kidman considered this a passion project for years, and she at one point considered to direct herself, following difficulties with finding a director. However, in 2014 she decided to let go off the project.
The true origin of Gerda Wegener (Gerda Gottlieb Wegener Porta (15 March 1886 - 28 July 1940)) is Danish, not American. The novelist changed her origin to American to suit the American readers. Not to be confused with German makeup artist Gerda Wegener.