[3][4] Her first major international competition was the 2012 Junior European Championships where she finished thirty-seventh in the all-around during the qualification round.

[8] Then at the Gym Festival Trnava, she won the bronze medal in the all-around behind Oksana Chusovitina and Anna Pavlova.

[12] Her final competition of the season was the World Championships where she finished thirty-ninth in the all-around during the qualification round with a total score of 50.999.

[13] Mokošová won the silver medal in the all-around at the Salamunov Memorial in Ruše, Slovenia behind Lithuanian gymnast Laura Švilpaitė.

[16] Then at the Gym Festival Trnava, she won the bronze medal in the all-around behind Anna Pavlova and Lisa Katharina Hill.

[26] Then at the Hungarian Grand Prix, she finished fourth in the all-around and floor exercise and sixth on the balance beam.

[31][32] She then won the gold medal on the balance beam and a bronze on the uneven bars at the Gym Festival Trnava, and she also finished fourth in the all-around.

[35] She then represented Slovakia at the 2016 Summer Olympics and finished forty-fifth in the all-around during the qualification round with a total score of 52.799.

In the event finals, she won the bronze medal behind Hatakeda and Evgenia Shelgunova, and she placed fourth on the balance beam and floor exercise.

[48] At the Osijek World Challenge Cup, she won silver medals on the uneven bars and the balance beam, both behind Ukrainian Diana Varinska.

[52] She then competed at the European Championships and helped the Slovakian team place nineteenth during the qualification round.

[55] Mokošová returned to competition at the Osijek Challenge Cup and placed sixth on the uneven bars.

In the event finals, she won the silver medal on the uneven bars behind Schermann and on the balance beam behind Noémi Makra.

[57] She then represented Slovakia at the 2019 Summer Universiade and placed eighth in both the uneven bars and balance beam event finals.

At the postponed European Championships in December, she won the bronze medal on the uneven bars with a score of 13.300 behind Hungarian gymnasts Zsófia Kovács and Zója Székely.

[66] At the FIT Challenge, she finished eleventh with the team, seventh on the uneven bars, and twenty-seventh in the all-around.