Brøns Petersen comes from the Copenhagen suburb of Herlev. She comes from a handball family: Her father was a player and is now a coach, her mother was a Champions League winner and her older sisters Emilie and Nikoline also play handball professionally as well.[2]
Club career
As a teenager, Brøns Petersen was part of the Danish team at Rødovre HK and moved to the second division team Virum-Sorgefri HK in 2013.
In 2015, she moved to the Nemzeti Bajnokság I club Siófok KC.[3] In Spring 2016, her one-year contract was extended,[4] but in May of the same year the contract was terminated[5] and Petersen returned to Virum-Sorgefri. In December 2016 she moved to HSG Blomberg-Lippe.[2] In February 2018, her contract was extended to 2020.[6] She then moved to TuS Metzingen.[7]