A year ago, Tanya Zeshonski was living in Wisconsin, interning at the public television station, and eating Polish food on the holidays. Then her mother divorced her father, reclaimed her maiden name of MacDonald, and moved to North Carolina to submerge them all in their Scottish heritage. So now, at 15, Tanya is the oldest beginning student at the Flora MacDonald School of Highland Dance. Instead of pursuing her dream of being a filmmaker, she's...