Question

how do you know miss packletide Bullet hit goat not the tiger

Answer 1

you can red the story .There is clearly written that Miss Packletide had not shoot the tiger . She shoot the goat . The tiger had died by the sound of bullet because it was very old and weak tiger.

Answer 2

because loona bimberton had described it that how the people would react when they would know that the bullet had fierced the goat in spite of the tiger and the tiger died because of the loud sound of gun

Hope this is sufficient for you
Thanks