Well, but to be the same girl she would have to have in her resume "photo shoot as a kid, ended up on famous prog metal album" and the ones in charge of putting together the video would have to look through various "actresses for videos" lists and see her name and say "hey, this one already worked for the band, let's bring her in"... I find that very unlikely (and for it all to be a coincidence, well, the odds are impossible).
Why would DT keep in touch with a child that did a photo shoot for a cover? did she became a fan and wrote to her management "Hey, I'km the kid in the cover, if you want me for a video or something I'm avalaible"? nah...
(Anyway, couldn't find the girl, but I watched the video again... I remember the I&W girl, it's just not her)