Time after time she hung on by a thread in her musical journey to “American Idol’s” 2011 finale. But Thursday night, a day after rocking out onstage with her guitarist father (and stumbling on stairs in the process), Wheeling native Haley Reinhart’s lifeline finally snapped and she was dropped from the final three.Judging by the shocked (some thought angry) look on her face, she was expecting ......