Close-knit: Student uses yarn for art in storefront

As she has many times before, 25-year-old Northern Illinois University senior Kristin Roach sat quietly knitting. But this time she was on display. Monday marked the first day of nearly one month of Roach's planned live-performance art piece. She will tie up the loose strings of her time in DeKalb by knitting and crocheting in the storefront window of The Yarn Exchange at 134 E. Lincoln Highway. “I decided I wanted to do an installation at The Yarn Exchange because I wanted it to be site-specific,” said Roach, who will graduate in May with a Bachelor of Fine Arts in painting. “Plus, our front window display has always been a little lacking.” Roach hails from Moline and moved to DeKalb in the summer of 2005 to pursue painting. She began knit