I appreciated your showing us a little of what a wraith titan might get up to in its 'off hours', and your personal twists on the High Elf lore. Regrowing old souls as plants is a good concept with a lot of mythic and genre precedent, and you carry it off well. I especially enjoyed the depictions of Eredh's empathic connection to the forest.
I think the story might be improved if you narrowed down what you really wanted to express. There are a lot of ideas and story elements packed in, and I found myself struggling to follow along with new details as they were introduced. The fight scene, while detailed, veered into pedantically mechanical at times, and I think these two issues might solve each other: by making your fight scene descriptions tighter and more dynamic, you free up space for additional exploration of emotion, theme, and backstory.
Anyway I appreciated your vision here, and with a little more polish and attention to your craft, you could really bring that vision to life in a powerful way. Keep it up!