I first learned the word when forced to sit through an unsubtitled French film at the age of about 14 - I think the title renders as Twilight of the Gods, and I remember chasing the 'crepuscule' part back to a Latin word meaning dark. I've never seen a usage suggesting much extension beyond 'twilight' so I suspect she's taking a poetic stretch.

And heh, the literal answer to your headline question is yes - or, as they may say in Princeton, indubitably! ;)