In early June, Lynda Sorenson, 52, had gone back to community college in Tucson in hopes of getting back on the job market. One of her classes was a basic algebra class--and one of her classmates was Jared Loughner, now identified by authorities as the man who killed six people and critically wounded Rep. Gabrielle Giffords (D-Ariz.) in a shooting rampage Saturday. Sorenson's emails to friends from last summer, provided to the Washington Post, reveal her growing alarm at Loughner's strange and disruptive behavior in class. SNIP From June 14: "We have a mentally unstable person in the class that...