Nope, the therapist isn't the game's writer, that's none other than Peter Stormare.
I watched the posting of the stream Dodger/PressHeartToContinue did with her fiancee of the game and I must say, i'm interested playing it myself and it's now a likely PS4 option to get. I think a good thing about it is that even when I saw the entirety of the game, there was still enough stuff missed that I could still check out and find other sorts of secrets, paths and character interactions.