Thank you so much for taking the time to answer the questions, that will be very helpful on setting the goals of this character!
As for the latter video, I really can't speak from a storyteller perspective, but I do think that this sort of linking of threads makes it all more believable, and having read some threads with Aello before, it does seem like that event was quite relevant for her character progression. Even if it is just an impression of mine, I think you're already doing a good job when you are able to have such an effect of a character's concept, as well as when you are flexible enough to allow players to alter in a way or another your original plans (as you mentioned about the temple being spared from destruction because of one). That's pretty much a mutual storytelling going on, which I feel is the whole purpose of this website in the end, I think. It all gets more interesting when we get surprised at how the story flows.