[6] At the end of June 2022, she won gold medals in singles and doubles at the Mediterranean Games in Oran, Algeria.

In the finals, she defeated Italian Nuria Brancaccio in singles,[7] and, alongside Jéssica Bouzas Maneiro, Maltese Francesca Curmi and Elaine Genovese.

[8] Maristany gained entry into the WTA 125 2023 Open Internacional de Valencia as a lucky loser, defeating Alena Fomina-Klotz to reach the second round,[9] where she lost to Marina Bassols Ribera.

[10] Given a wildcard entry into the WTA 125 2024 Catalonia Open, she made it through to the semifinals with wins over Nao Hibino,[11] Dejana Radanović[12] and third seed Arantxa Rus,[13] before her run was ended by Mayar Sherif.

[14] Maristany made her debut representing Spain in multi-sports event at the 2022 Mediterranean Games, she won the women's singles and the doubles gold medal.