My question involves criminal law for the state of: Virginia

My brother claims it was only his friend that stole items, and the cops were not called to the scene. His mother was called to come pick him up, and the store associate only asked for her license. My mother never signed any papers, but was told my brother would be banned from the store for a year, and she should receive something in the mail from the company's attorney. Shouldn't my mother have been told the dollar amount he was accused of stealing, or had to sign something since he's a minor? What should he expect to happen? What can the company legally do?