That's not what happened. Between panel 2 and 3, she simply swapped the book for two cans of beer.
She's going to recycle them, after emptying them first, of course.
Updated
Oh, reading a book, huh.
Fun With Recycling
Just what are you reading?
Fun With Recycling
Pretty unusual coming from you, Pola.Ohhhh...
...wait a minute.
Mm-hmm...Aluminum and steel canssh can be made into various household goods...Awrrrighsh! Pola here will try her bestsh in recycling canssh too~Saluteeeh!Issh a book about recyclingsh~