Carla thought there might be only couple or more supernatural beings but according to this ancient book there are more than dozens of them. In those olden days, these supernatural beings married into other communities as well so crossbreed beings were so popular and arrogant as they possessed more powers compared fellow supernatural communities.
Margery's assistant came to Carla and informed her to go along with him for campus canteen to have lunch with her aunt and professor Adaline.
Carla wanted to complete the book first but then she doesn't want her aunts to wait. So she took the book along with her to librarian desk.
The librarian is an nice old man who is strict and doesn't allow students speak in the library. When he saw Carla coming towards him, he put down the work he is doing and looked at her.
Carla smiled politely and said - "librarian sir, I want to burrow this book for a while and will return to you after some time."