If Vardy wasn't the leaker, then that means someone in her social media team was the leaker and caused all of this. That's the person who needs action taking against (Assuming it wasn't Vardy after all)
Which was the genius of the wording by Rooney, and presumably a lawyer had a hand in it.
She specifically said "It's Rebekah Vardy's account", not "it's Rebekah Vardy."