She’s going from “Duchess Difficult” to “Princess Parody.” Meghan, the Duchess of Sussex and wife of the United Kingdom’s Prince Harry, has been practically writing a textbook on how to alienate the public — not to mention the in-laws — since marrying into the British royal family. And now a new report claims that she’s wailing that the bad publicity is actually really bad bullying. On Thursday, the celebrity-centric Vanity Fair published a piece positively reporting on a Meghan visit on Oct. 2 to the mentoring program Girls Inc. of Greater Santa Barbara, California. “We did an activity wher…