I'm afraid @PeterDellaPenna has shown up what was really happening at the non-striker's end with Charlotte Dean. That is precisely the reason the law is in place. In a court of law, this evidence would produce a conviction

Went back to the full match replay. Charlie Dean was leaving her crease early starting with her 2nd ball at the non-striker's end in the 18th over. Ball still in bowler's hand. Dean is never looking at the bowler to see if/when the ball has been released. Basic lack of awareness.