While it might look like a secret message, there is no hidden meaning behind the 6 of clubs. My reasoning was, that i somewhat wanted each of the four colors. The Ace of diamonds stands for Schroedinger, of course. duh. Nah, there is no real reason, why. Its more the optics and that I think if she were a card, she would be the Ace and its somewhat the ... brightest of the cards. Does that make sense. Well. Her Business-card that she gave Mukoshi when leaving does look like an Ace. Her Initials VS are written in red on the back. But I found it too distracting and did not show a close up. Also - there is not much personal choice in how an official business card of a law enforcement agent would look like. I doubt Schroedinger has made personal ones. That being said, the Ace of Diamonds stands for her. The six of clubs is random, two of hearts is ... two lovers. and then of course the Queen of Clubs is the Lady.