Answer:
Cora should invite the audience and see the marbles after the speech that was given by Cora on marbles. Another speaker can follow her schedule and can follow Cora. Cora is a businesswoman so when she started her speech she should collect the information about the marbles. So it can satisfy people with the quality of marbles. If the information is reliable and informative, trust able people will start to follow her. Cora should go online and search for another collector of the marbles. There are women in this field more in numbers than males.