The best answer for this question would be:
The reaction that Johnson had at Stewart was that he was
confused, but he was ready for open fire. This represented at a possible mutiny
that Stewart did, it caused hismen to disobey him and to follow Johnson instead
which triggered Stewart’s actions.
If your question is why your friend hasn't shared the reason with you, it might be because its a personal thing that her parents or even herself don't want her to tell people. Or its a reason that she might think that you think its silly and doesn't want to share with you.
Hope this helps! :D
