Well, today I received the card from the person who sent one to me, who is not the same person to whom I sent one. The Redditor who sent mine was from Agusta, KS, and here's what she sent:
I still haven't been notified that the person I sent a card to has received it yet. She was in Washington state, so I'm guessing she'll probably get it tomorrow. I did manage to find a picture of her, though:
And again, for posterity, this is the card I sent her:
I will make another blog update when/if she posts that she received it.