Holy hell, this is amazing. The attention to detail is topnotch. I was sufficiently impressed by the matchbox, and then I was like, "Oh cool, a ribcage" and then rational thought left me when I saw the finished product. I can only imagine your partner's reaction when she received.
I don't swap because I am self-aware of my flakiness when it comes to letter-writing/card-sending and know that I can't just give up after months of no contact and email a craft to my poor neglected partner. It's amazing projects like this that make me really regret that flaky side of me (more than annoyed siblings and a nagging mother ever could).