Blink. Teleport where you are at and teleport a trash can into your body. She doesn't have to do any work, don't have to be close to you, and you'll never see the attack coming. Or she can just teleport the building you are in inside Galactus stomach. Her options are limitless and if by some chance you were able to detect her, she is a precognition AND she has amazing agility and speed only challenged by Spiderman.