Not having knowledge of the specific 'Barbara Neder True Story', we can only assume. Usually, key elements in a true story could be the turning points in the protagonist's life. For example, if Barbara Neder was an entrepreneur, it could be the moment she got her first big investment or the time she overcame a major business obstacle. Also, her relationships with partners, employees or family members could be key elements depending on the nature of the story.
As I don't know the details of this story, I can't tell the key elements. But generally, key elements in a true story could include the main character's goals, the challenges they faced, and how they resolved those challenges.
Since we have no information about the 'Barbara Neder True Story', it's impossible to determine the key elements. However, in a typical true story, key elements might also involve the people around the main character, the location where the events took place, and the time frame of the story. These elements help to build a complete picture of what happened.