Just because she is not paying money, doesn't mean she has no rights. YouTube are still under contractual and moral obligations regardless of how much money she gave them.
Contractual obligation? What contract? I guarantee you that the clickthrough agreement the blogger signed explicitly said that Google might do what it's doing now.
Moral obligation? If you start saying that someone providing a service has a moral obligation to open themselves to civil suits on behalf of the people they serve then you'd see a lot fewer people offering free services.
