Where a plaintiff could not prove a link between the support of a colleague’s sex discrimination suit and later termination, the retaliation claim failed. The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge Tanya Walton Pratt, Southern District of Indiana. Diane Ripberger worked as a substance abuse counselor for the Indiana Department of Corrections. Ripberger began work in 1991 and initially retired in 2007. Ripberger returned to work in March 2008 at IDOC’s Pendleton …