That's very strange, it was definitely included from the bundle from the beginning and seems to still be listed as part of the sale so I have no idea what happened there! Thank you for letting me know, I'll drop itch a message about it and I've added some extra community copies.
Thank you so much for your kind words!! I really hope that things improve for you soon. And I know the feeling about pausing a game and waiting for the itch to come back... I have two journaling games I'm playing on pause for a little while now. I hope you enjoy the rest of the game when you return to The Walls (they're quite good about waiting)!