Ithaca councilwoman Robin Korherr testified yesterday in Binghamton, alleging sexual assault against her former boss and Tompkins County Sheriff Peter Meskill. Korherr, who served as Meskill's secretary from 2003 to 2007, alleged two years of harassment following her 2005 divorce. Korherr, who represents Ithaca’s 5th ward, left her job under Meskill in 2007. She now works for the Department of Homeland Security.