Much to my great-niece Elia’s dismay, I had never seen the first “Frozen.” “Seriously? Don’t you guys ever go to the movies?” she asked with more than a hint of teenage judginess. As if. I swear she’s 13 going on 21. There I was at the Emagine Rochester Hills movie theater waiting for my sister and four of her grandchildren. Who on earth goes to the movies at 10:30 on a Saturday morning? Lots of children and seniors, including the six of us, apparently. After the previews ended with about a minute to spare until the movie was starting, I leaned over and asked Elia what the first “Frozen” from…