She stood and turned around and of course there was nothing there. But she could see him standing there, his hands jammed deep into his pockets, that… - Stephen King

This time Brady wonders what Freddi would say if he told her what life was like for him when he was a kid. That was when he killed his brother. And his mother covered it up.
Why would she not?
After all, it had sort of been her idea.

Did they live happily ever after? They did not. No one ever does, in spite of what the stories may say. They had their good days, as you do, and they had their bad days, and you know about those. They had their victories, as you do, and they had their defeats, and you know about those, too. There were times when they felt ashamed of themselves, knowing they had not done their best, and there were times when they knew they had stood where their God had meant them to stand. All I'm trying to say is that they lived as well as they could, each and every one of them; some lived longer than others, but all lived well, and bravely, and I love them all, and am not ashamed of my love.

You know, schizoid behavior is a pretty common thing in children. It's accepted, because all we adults have this unspoken agreement that children are lunatics.