A Markham firm has been sent hopping to yank a Valentine version of the Happy Bunny book series after a mother complained of its "disturbing" messages. Scholastic Canada Ltd. yesterday said it was responding to Tina Dale's objection after her daughter Emily, 8, brought home It's Happy Bunny: I (Love) Me Valentines, by Detroit author Jim Benton. Some of the 36 pull-out stickers include references to "floating face down in a river"; "Wow! You're icky! Would some candy make you feel better about that?"; "I think you're the best. (The best I can do for now.)"; "I know how you...