How can the corpus delecti of robbery be demonstrated?

After reading “What Constitutes the Corpus Delecti of an Offense,” please answer the following questions. How can the corpus delecti of robbery be demonstrated? Of theft? Why did the court conclude that, “In this case, the evidence does not conclusively establish that Hoke’s purse was taken forcibly from her. The evidence does, however, support an inference that she was robbed”?