mystery of the missing book: The Relieved Part

a couple days ago i told you a story about the missing library book and finally, i've got a (rather) happy ending to the story. by the way, no; the book hasn't been found up until now if that's what you think. so why did i call it a happy ending? 

because my worst scenario of how i should return the book isn't happening. my worst scenario is whether i:
1. should pay fine for as much as the cost of the book, which i'm sure is not cheap at all (considering the book is imported from U.S), or
2.  should substitute the exactly same book as the one that i've lost to the library which i don't know where on earth *not exactly earth, maybe just in Jakarta area :p* should i find the book, because of the same consideration as the above.

and i have to do none of the above! i was told to just simply copy that missing book with another exact same book from the library and give the copied version to the library. it is sooo major relieve to me because i don't have to spend much cost nor energy nor time to replace the book! yeheeaah glory glory the librarian alrighty! :D