Nobody uses the library yet. The We do occasionally request books, but giving up a book after they have it is conceptually similar to death for them, so books are purchased for them out of their accumulated silk funds.
2. What's the range of Animus Imprisoned and how is it functionally different from Life's End bar the latter's willpower test? At the moment it reads like a reliable instant kill spell if successfully cast.
Animus Imprisoned requires prolonged physical contact, Life's End can just boop the soul right out of someone from across a room.
Yes.
No, but it could if the physical body of the owner of the soul wasn't in the way.
Yes.