Every tween girl knows what it's like to have a mom who can be a little embarrasing at times. But for Marigold, it goes way beyond embarrassing. Marigold's single mom is a performance artist, meaning she stages dramatic, wacky performances to express her personal beliefs. Things like wrapping herself in saran wrap for a piece on plastic surgery, or inviting people over in the middle of the night to videotape her sleeping. In fact, Marigold's mom's...