[6] Casabuena made her international debut at the Koper World Challenge Cup where she finished fifth on uneven bars and seventh on floor exercise.

[7][8] In June, she competed at the Mediterranean Games, where the Spanish team took the bronze medal behind Italy and France.

[9] At the European Championships in Munich, Casabuena helped Spain qualify for the team final, where they placed eighth.

[15] Casabuena started the season competing at the Cottbus World Cup where she finished sixth on vault and eighth on floor exercise.

[16] She next competed at the City of Jesolo Trophy where she helped the Spanish team win the bronze medal behind Italy and South Korea.

Individually, she won the all-around bronze medal behind Romanians Ana Bărbosu and Sabrina Voinea.

[28] At the final event in Doha, she finished fifth on the balance beam and won the bronze medal on the floor exercise.