Mau's initial career involved work as a legal assistant with immigrant survivors of violence. She then worked as a peer counselor, in addition to conducting advocacy work for LGBTQ survivors of violence. In the film, Mau starred as Sofia, a young transgender woman who meets a potential romantic connection Isaac, a cisgender man, at a party. Mau's character must balance her desire to be intimate with someone and her own sense of personal safety. In 2020, she was selected as a production fellow for the
Netflix documentary
Disclosure, and worked as a producer on the short film
Work, which premiered at Sundance. Mau also produced the short films ''Sam's Town
and Lovebites
. In 2021, she starred in the HBO Max series Generation'' as part of the show's main cast. She played the part of Ana, the aunt of one of the series' main teenage characters. In 2024, she starred in the Netflix series
Baby Reindeer as Teri, the girlfriend of protagonist Donny Dunn. The series, which started as a stage play at the
Edinburgh Festival Fringe, had seven episodes and received critical acclaim. On her role as Teri in
Baby Reindeer, Mau commented, "It seemed really important to show people that trans women exist in real life and in relationships with real people." == Personal life ==