No, as you can tell from the title, it's not Bastet, although she resembles her a lot. The girl on the picture is Marie Schärer, the female main character of one of my favorite books called "Die Wanderhure" (english: The traveling whore) written by german author Iny Lorentz.
Marie is a beautiful girl with long blonde hair, light blue eyes and fair skin. She is supposed to marry a rich man she doesn't even know. She also doesn't know his intentions are different - he doesn't want to marry her, he wants to get rid of her and her father to get their fortune. He does so by accusing the young virgin girl of harlotry as she was supposed to be a virgin (which she is, like I said, he wants to get rid of her). Marie gets imprisoned and raped by his men, beadle Hunold, wagoner Utz and scrivener Linhard. The next day, she gets whipped in front of the crowd and thrown out of town.
She's found by a prostitute who takes her under her wing and teaches her how to earn money as a whore in order to survive. Marie actually despises a life like that, but the grudge and hate in her heart longs for revenge. All she wants is to make those who did this crime to her pay, and she has no choice but selling her body in order to reach her aim.
Her pose is referenced from a Snow White (Disney) picture, only the dress and her face is (c) moi.
Yes, one of the saddest fiction stories I've ever read.
I don't know, you'll have to look for it somewhere in your book stores or on the internet. It must be something like "The Traveling Whore" in english... or just google the author, she's called Iny Lorentz