Amelia breaks the news about her brain tumor to Maggie, and asks her sister to help her tell Owen, and to be the one to tell Meredith. 'You are going to have to tell Meredith, because I can't do it,' Amelia says. 'She's been telling me I'm crazy for years and this kind of makes her right, and... I hate that. I think more than anything, I hate that.' Watch this scene from Season 14, Episode 3, 'Go Big or Go Home,' and don't miss Grey's Anatomy THURSDAYS 8|7c on ABC.