De Vanna made her initial allegations in response to a Twitter post by Megan Rapinoe, in which the U.S. international commented on allegations of misconduct against former North Carolina Courage head coach Paul Riley.
The 36-year-old De Vanna, who played 150 times for her country over two decades, replied that she had witnessed women in the game abusing younger female players, and organisations protecting the abusers.
"There needs to be consequences. There needs to be accountability," she said in an interview with News Ltd media.
