This chapter is a great example of faith. The Queen believes Ammon without seeing any of Lamoni's interactions with Ammon.
9 And Ammon said unto her: Believest thou this? And she said unto him: I have had no witness save thy word, and the word of our servants; nevertheless I believe that it shall be according as thou hast said.
10 And Ammon said unto her: Blessed art thou because of thy exceeding faith; I say unto thee, woman, there has not been such great faith among all the people of the Nephites.
Isn't that awesome. Ammon goes to this wicked people and he finds out that they aren't really all that wicked. In fact they are easier to teach than many of the Nephites.
Are we that trusting of the Lord? Or do we question the gentle pleadings of our Prophet and Apostles?