Petra has her first lessons in children’s ballet at age four at the Theatertanzschule St. Gallen and, as of 2002, based on her extraordinary singing talent she attends the professional music education program at the Joop van den Ende Academy (Stage Holding GmbH) in Hamburg.

The Pierino Ambrosoli Foundation supports Petra in her professional development to the point of her qualification for the stage as a musical performer, which Petra successfully achieves in July 2004.