It started with a Facebook post tapped out on a whim.

“Hello selfless people,” Cody Jackson wrote from her bed, two days after Christmas 2020, “my partner and I are a same-sex couple looking to fulfil our dream of creating a family.”

The couple, then in their late 20s, were doing more than just thinking about having a baby. By the time she hit post, Cody’s partner Sarah Armstrong had already undergone two unsuccessful rounds of insemination at a fertility clinic with sperm from a catalogue of anonymised donors.