She was born with Erb's palsy, causing limited movement in her left shoulder and arm.

She was put into physical therapy by her parents as a child, and began to play several sports, including track and field, around the age of ten.

Despite her Erb's palsy, Mason was not aware that she was qualified to participate in parasports as she had competed alongside able-bodied runners her entire life.

[4][1] Mason competed at the 2019 World Para Athletics Championships in Dubai at 21 years old, winning gold in the women's 100-meter T47 competition.

[1] She has stated that her frequent media appearances are an opportunity for her to bring more attention to the Paralympics and to help people who, like herself, may not have been aware that they could qualify for parasports.