Batgirl wants you to read, but:

Yes, girls and boys, superheroes are all in favour of you reading. It is better than hanging out in the street, pestering your elders and betters instead of doing a decent day’s work like they did before they started screwing up the planet, the economy and so on.
In any case, please, if you have taken a book from the library, have the good courtesy of returning it on time. And do not steal any of the books. Batgirl will find out and she will come and get you:

Batgirl says: Return your books!