The Dog Knows

Where is she coming from?
Maybe she comes from the wasteland, where she dumped the knife she used to murder her husband this very morning at his home.
Maybe it's a construction site and she comes from having an affair with some worker in her lunch time.
Maybe she's stolen something and hid it in her purse, which she's holding onto tightly.
Maybe just another thing. Anything. There's only one who knows the truth: the dog.

* the painting on the wall is from Xul Solar [link] , a very interesting painter if you ask me, and thanks * olieviya for the grammatical advise.