Hush, little baby, no use screaming
No one will help, you're only dreaming
No woman claws at closed windows
No creature wears your brother's clothes
The night is empty, the campsite safe
Get on the plane, no need to wait
The spirit in the mirror is laid to rest
No punishment comes at a girl's behest
And while her blood drips from the ceiling
Hush, little one, you're only dreaming
Written having only seen the first few episodes. Directed at Sam and his visions. Comforting, yes?