Lyric discussion by InertialCreep 

I'm pretty sure the chorus goes..

Oh, Queen of the Night Her chiastical sigh As she is haunting me

Here 'chiastical' is an improper form of the word chiastic, describing the symmetrical gasping breath (in and out) during sex. This is simulated near the end of the song.

I would say that the song is written from a male perspective, it is an expression of his sexual desire for this girl, but as jewdiful notes, the reference to the 'Queen of the Night' as in 'The Magic Flute' perhaps indicates that she has the ability to obscure all logic, reason and wisdom from his mind, 'haunting' him instead with these sensual images and eventually leading him to doubt his (somewhat more hesitant) conscious judgement ('She COULD me mine').

Just my 2c.

An error occured.