Originally Posted by
Yuki Она брала книгу в библиотеке.
In case this sentence implies she returned the book to the library, she just read it in the library and did not take it out the library?
It implies only that she used a library book. Nothing more.
It doesn't say directly if she took it home or read it there, but we can make an assumption, based on statistical probability, that she took the book out of the library, and after some period of time she returned it.
Another possible example:
В детстве я часто брал книги в библиотеке, но ни одну не вернул.