If you're concerned about connections to the movie "Twilight" and the effect of sparkling, well, in all fairness, she was here first.
Not quite. The generation 1 name was "Twilight Twinkle," but Hasbro lost the rights to it some years back. When asked on DeviantArt if the new name was a reference to the Twilight series, Lauren Faust answered only "It passed legal." Make of that what you will.
(I do think giving that name to the nerdy book-lover with no interest in romance was a deliberate tweak at the movies and novels, though.)