Both themes sound really nice, lovely and rich. Very nice chord progressions too. The distortion and slowing down at the end of "At Home" is very very cool!
Nightmare is a very unsettling piece for me. It makes me want to finish the game as quickly as I can and wake up to the "At Home" theme haha. It's really awesome that you produce such contrasting pieces within 48 hours. Simply amazing!
P.S.: Somehow there is a section where you have woodwinds doubled with string and it sounded a bit like church organ at "At Home" 1:39 :)