No, she didn’t have six fingers, she wasn’t a witch and she probably wasn’t catting around, especially not with her brother.
Henry wanted a son to secure the Tudor line on the throne, and back then, people didn’t realize that it’s chromosomes in the sperm that determine the sex of a child. A woman’s egg has only X chromosomes. A man’s sperm can have X or Y chromosomes. See how unfortunate that was for Anne?
Anne miscarried twice and only carried a girl to term, a baby who grew up to be Queen Elizabeth I. After the second miscarriage, Henry accused Anne of “bewitching” him and luring him to sin in leaving his first wife, Catherine. But Catherine hadn’t had a son either, and that’s why he left her in the first place, though he made some other justification for it at the time. Henry was good at believing his own lies if it got him his way.
The real reason Anne Boleyn was executed was because she didn’t give Henry VIII a son, and Henry had found his next prospect, Jane Seymour.