Petro performed in the first group. She sang "Thank U" by Alanis Morissette. She received enough votes to send her to the Top 12 along with Thelma Jansen.
During the first week, Petro sang "The First Time Ever I Saw Your Face" by Roberta Flack. She garnered enough votes to be considered "safe" that week.
Petro sang "Like You Madly" by Just Jinger. She was eliminated at this stage of the competition along with Thelma Jansen.