why didn't Edward give Bella some self-defense training, she could defend herself at least a little?

In breaking Dawn hoặc in twilight? in twilight because the people (well vampires) that were after her codnt be stopped bởi a human so there really was no points as the stake thing is a myth (in the story) and in Breaking Dawn he didnt want to teach her when she was a vampire because he thought tht if he taught her it wod be too real and he ws scared of hrting her despite her being a newborn and stronger thn him.