After learning she and Peeta's ipakita has not been enough for President Snow, what does Katniss decide to do?

When she sees that people are still rioting, during the Victory Tour? She suggests that they get married, in order to further persuade people that their pag-ibig story was real and not just an act of defiance.

Was this meant as a iksamen question? The answer is pretty obvious in Catching Fire.