Bronzetti won the final in three sets, 6-4, 5-7, 7-5.
In the semi-finals, the Italian, ranked 102nd in the world, beat American Sloane Stephens, seeded No.1, 6-1, 6-1. For her part, Grabher, ranked 74th in the world, eliminated Argentina's Julia Riera (6-1, 3-6, 7-6).