[2] Alonso attended Southern Methodist University in University Park, Texas and Virginia Tech in Blacksburg, Virginia both in the United States for her university studies where she competed for the SMU Mustangs and Virginia Tech Hokies respectively in National Collegiate Athletic Association - NCAA Division I, Swimming & Diving.

[3][4] During the 2024 Summer Olympics, Alonso competed in the women's 100m butterfly, finishing 6th in her heat, 29th overall, and failing to qualify for the semifinals.

[5][6] On August 5, it was reported that Alonso had been asked to leave the Olympic Village by Paraguay's chef de mission for creating an "inappropriate atmosphere" around the team.

[7][8] Meanwhile, the Paraguayan digital newspaper Hoy reported that Alonso had spoken about her reluctance to represent Paraguay on a livestream prior to the Games, instead expressing a desire to represent the United States.

[9] On August 6, Alonso addressed her expulsion, stating that she had indeed left the Games but had done so of her own free will.