This was not the first time she had won over the confidence of authority figures in her life, she prevailed in a legal trial when her father sought to bound her to a marriage obligation to a man she did not even know. Somehow, she convinced the Judge to free her from the obligation her father had made. At the age of fourteen. Without any legal education.
So after receiving her military escort, she arrives at the French Court, where she correctly identifies the prince hiding in the crowd of courtiers. She strikes up a conversation with the prince and whispers a secret known only to the two of them and God. (We still have no idea what this secret was, though it has been rumored to be the prayer the future king had prayed to His Creator. Joan of Arc refused to reveal this confidence even under torture.)