There is a ton of mind reading up there. Like a TON. 3 years of this .... I knew her every move and every thought after 25 years but I will tell you this ... once the crisis starts toss all that out the window as you have no idea what they are thinking, what the intention is nor what they are doing/planning ..... why? Because they themselves have no idea ... seriously they are so thick in the fog they do not even know what they are thinking so how on earth could we?
You might think the card has some hidden meaning, this is the search for that magic bullet, that cryptic message that only you would understand but from the outside its simply a card. He included you because he did ... that's it ... its a card.
Try not to spend your time trying to go all DaVinci Code on this, you can not make the crisis become logical, its like trying to straighten out spaghetti
Just some thoughts for you to muse over and hopefully you understand where I am coming from.