Luna wonders sometimes

when the Nargles

will leave Hogwarts.

In other, less puzzling, words:

Luna wonders when Hogwarts

will be nothing

but the dust and ash from whence it came-

magic

gone.

She walks through the halls,

and she can feel the ghosts:

the fire that blooms

behind the ear,

the ear-piercing shriek

of shattering stained-glass windows...

if she lets herself go,

she can almost

glimpse the ruins.

But she's no seer-

and has no wish to be

so Nargles abound,

i.e., castles stay castles,

ghosts stay ghosts.