[1][3] In February 2020, in the first WT20I match of a bilateral series between Germany and Oman at the Al Amerat Cricket Stadium, Muscat, Ronalds shared in an unbroken partnership of 158 with Christina Gough, during which both batters scored 71*.
[6] She hit 105* in 74 balls, and shared in an unbroken first wicket partnership of 191 with Gough, to power Germany to its highest ever WT20I total of 191/0.
The partnership was the fourth-biggest in WT20Is, and Germany's total also set a new record for the highest score without losing a wicket across all T20Is.
[10] In Germany's next bilateral series, against France at the Bayer Uerdingen Cricket Ground, Krefeld, in July 2021, Ronalds played in four of the five matches, and was again one of the stars.
[11][12][13] The following month, she played in all four of Germany's matches in the 2021 ICC Women's T20 World Cup Europe Qualifier.