Hello @ubani1,
You have created an interesting scenario. Very imaginative. Of course, in a library it is a valuable book that lures a thief. And what a book. You draw the scene vividly so we can imagine the librarian running after the thief. We do worry about her, but the thief only cares about the book.
Nicely done!
You're welcome! Keep writing, and the ideas will keep coming :)