In 2018, she won the English Girls U14 Championship[3] and in 2019, she won the second edition of the British Girls U16 Amateur Golf Championship at Fulford Golf Club, securing a wire-to-wire victory on six-under-par.

[4] Fiorellini joined the National Team and represented Italy at the European Young Masters, the European Girls' Team Championship and the World Junior Girls Championship in Canada.

[5] In 2022, Fiorellini won the Annika Invitational Europe at Vasatorp Golf Club, beating home player Nora Sundberg with a par on the fourth playoff hole.

[7] In 2023, Fiorellini triumphed in the Italian International Ladies Amateur Championship at Circolo Golf Torino, the only participant to score below par, beating defending champion Helen Briem in second by four strokes.

[2] Fiorellini graduates in 2024 and has committed to follow compatriots Emilie Paltrinieri and Alessia Nobilio to enroll at UCLA and play with the UCLA Bruins women's golf team.