Write a story that seems normal on first sight , except for one small detail that makes it extremely creepy on a more careful reading [ WP ]

To my dearest friends, 
 
 Hey, everyone back at St. John's, I know I was supposed to wait before sending a letter but I just have so much to say! Everyone in my new home is so lovely and wonderful, my dad tucks me in every night and my mom is teaching me how to sculpt! Clay is an amazing medium, with so much potential. Lovely birds, foxes and owls to daisies and petunias- I can make it all, now! Anything at all, I can create with the help of my mom. You would n't believe how kind she is, always providing me with fresh materials to practice on. 
 
 I'm learning so much here, every single day! Seriously, I hope you all find wonderful homes of your own one day. Freedom is a magical thing, one to greatly envy! Love is beautiful, especially parental love, and I'm still trying to get used to it. Every day I grow a little stronger, knowing they're supporting me so much. Sleeping in a real bed every night is incredible, too! Here, they even have these great curtains that keep the light out- you know how much I love the dark. 
 
 Surely, you will all know the wonder that is family soon enough. Each and every one of you will know what it's like to really have a mom and dad. Nobody deserves to live like an orphan, not even if you think otherwise. Dreams can come true! 
 
 Here I've just gone and rambled too much, sorry about that. Everyone here tells me I talk too much, as well. Love you all! Please respond to this letter! 
 
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 This one might be a bit hard to get, so I'll put a spoiler at the bottom. Do n't click on it unless you're totally stumped! And as always, check out /r/resonatingfury if you're bored!
