Co-edikit tackles our most complicated, fun, and devoted relationship—sisterhood—with its characteristically witty wisecracks.  Cheryl Caldwell pens her third Co-edikit title, which combines her lively trademark character illustrations with to-the-point relationship observations on the subject of sisterhood. Warm thoughts like, "You've loved me when I've been full of joy, full of myself, or full of crap,"…