Re: American Horror Story Discussion (Spoilers)
I always thought Constance was referring to Tate indirectly as her "perfect" child. All her other kids were deformed in some way (Addie and Beau, perhaps the other child as well).
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."
--Bilbo Baggins, LOTR: Fellowship of the Ring