Bahloul set out to create a
unisex place of worship, and she applied for the establishment of Fatima Mosque in November 2018, co-founding it with philosophy professor
Faker Korchane. Bahloul was recognized as an imam in May 2019, making her the first French woman to hold the title. She delivered her first
sermon to a mixed gender group of ten women and twelve men. As she became a prominent figure in the
French Muslim community, she held workshops in
Drancy about Islamic prophets with the Alawya order, and she co-founded La Maison de la Paix, which provided Sufi teachings in Paris with the Norwegian imam
Annika Skattum. La Maison de la Paix lacked funding and closed after one year. Bahloul formally announced the creation of Fatima Mosque in September 2019, making the announcement at Saint-Jean Lutheran Church. Men and women are allowed to pray together on opposite sides of the prayer hall, and the imam leading prayers alternates between a man and a woman each week. It allows worship by non-Muslims,
welcomes LGBT people, and conducts marriages
between Muslim women and non-Muslim men. As the project became known, Bahloul received derision and threats from the most
conservative adherents of Islam. She has stated that being afraid of threats would prevent her from accomplishing anything, and she dismisses them as "young people having fun on social networks". Crowdfunding was held to establish a permanent location, but it was unsuccessful. Instead, rooms are rented each week, the exact locations kept secret to avoid violence. The first service was held in February 2020, but the
COVID-19 pandemic began shortly afterward, and the mosque's activity was held online until the following year. Bahloul wrote a memoir,
Mon islam, ma liberté (), in 2021. She was identified by
Forbes as one of the 40 most important women in France the same year. Fatima Mosque became less active online in 2022 and it came to focus on a smaller group of members. Korchane left the mosque in 2023 in protest of Bahloul's support of French religious policies such as an
abaya ban. == Religious and political views ==