She was selected to compete at the 2019 Pan American Games in Lima, where she placed 15th individually and helped the Mexican team a 4th-place finish.

The spot was earned by a two-time Olympian Bernadette Pujals, who later switched allegiance to Spain, which allowed Del Valle to become the front-runner for selection.

[2] To prepare for the Olympics, Del Valle and her home-bred Lusitano Beduino LAM competed at the Global Dressage Festival in Wellington, Florida in early 2020.

The postponement of the Olympics, amidst the COVID-19 pandemic, forced Del Valle to stay in Europe for an extra year.

In the spring of 2021, Del Valle relocated to Portugal, for a further Olympic preparation period under the expertise of her coach, Portuguese Olympian Miguel Duarte.