Let yourself be carried away by the voice of the narrator, don't try to look for explanations or meanings, these will come later. This is a book you have to pick up again after you've finished to reread scenes to check the details. It's rather like hearing someone tell a long and harrowing story, you're fascinated at the time but later all kinds of little doubts and misgivings creep into your mind.
I've put the woman's jacket on. I felt a bit cold and there was nothing else. It was lying so conveniently, in the middle of the floor. How did it get there? It had been in the wardrobe, on a coathanger if I remember rightly. I must have pulled it out after me when I was searching for sweets some time ago. This was not good, of course. If anyone were to come in and see me wearing the woman's jacket, I'd be in trouble. I know and even so I'm sitting here chewing away at the hood cord. It's a cheap jacket.