How will they get to the bottom of this before the olympics if its the classic he said she said? The part about her losing her job you could debate in court but whether or not he grabbed her there were no witnesses because her friend got off the elevator on a different floor.
They could ask both Hardwick and Auriemma to take a lie detector test. I know, not full proof, but how else can they even get a hint of the truth? Two people (or one person) in a hallway can say anything and no one will ever know the truth. How can she prove Geno is a Lothario? How can he prove he is not? If you want to harm someone even without winning in court, this is a really good way. If Geno is not a Lothario but offended Hardwick in some way, she has hurt him badly even if there is never a trial.