Description:
As Midnight Moon was being chased by a pack of timberwolves in the rain one night, she lost her footing and feel off a cliff, landing on a rock with her horn breaking off its tip and knocking her unconscious helplessly in the rain as the pack of timberwolves loomed at the top of the cliff eyeing their next meal
a scene from Chapter 1 in her official story
https://www.fimfiction.net/story/344171/the-tale-of-midnight-moon