Mandlikova had no preference between forehand and backhand. She did run around her backhand at times to create an angle. But she could just as easily hit winners off either side.
Her forehand was voted best on tour as late as 1985, but her variety on the backhand was exemplary ....slice, topspin, chips, lobs, drop shots, etc. Though many would also say that this was also her weakness leading to poor shot selection.