I have no idea if this is why she lost the contest - who knows, maybe the others really were better than her. But it's pretty obvious from one of the judge's comments that she was marked low by that judge at least for picking an "inappropriate topic" to speak about. And there is one report that one of the judges walked out, while another stopped marking during her speech, although this is denied by the organizers.
(h/t rural - Francesca, who posted this on Facebook)