This was a very nice interpretation of my prompt and I really like how it turned out. The idea of showing how Rear's pack was formed fit was a good idea for this particular challenge, especially considering her internal turmoil after her not-perfect childhood. Also, the Alpha's path was a a very good idea and it managed to add more relevant lore to this story and to the Fields.
The basic idea for the plot was very clever and the way you showed Rear's fears and insecurities as well as the sights in the forest were tangible. I particularly liked Rear's temporary passing outs as they only added to the surrealism and fearful atmosphere. I truly enjoy these kind of scenes as they are a great way to blend the characters' thoughts and efficient and detailed descriptions of the environment to use.
Truth be told, I was expecting something that would drift even further to the realm of horror and to more mysterious events. That genre is quite rare in LBT stories but that's just a minor detail. Yet, this story managed to balance itself between that vision and meaningful character development. Furthermore, it's nice to see more backstory added to your main story.
All in all, I'm really happy to see how this turned out. You fulfilled the main points of my purposely vague prompt and integrate it into a great storyline and interesting plot-building. But after reading this, it feels like a shame that Alpha had to die so early... Anyway, you did a great job on this story!