Lindsey Baum was walking home from a friend’s house last June when she vanished. The 11-year-old hasn’t been seen since.In May, the FBI re-mobilized its efforts to find the missing girl. To McCleary, Baum’s hometown 25 miles west of Olympia, it sent a high-tech command center and new profilers and shrinks to re-plow evidence it had already tilled nine months earlier. But the two-week investigation brought no leads, no suspects.The Grays Harbor County Sheriff’s Office released a video of Baum that shows the girl playing seven months before her disappearance. Undersheriff Rick Scott says it allows the public to hear how Baum talks and see her mannerisms, anything that might yield a clue.