"You live here, you're part of this planet now." if he was going to live on it, then he had to be a part of it, it wasn't like there was a Krypton to go to anymore. Krypton in this world didn't even exist.
As he started to come toward her, she floated back, not really caring to let him get much closer. She didn't know why it was that he was supposed to be so much stronger than any other Superman, but she didn't want to see how much stronger.
"You'd never get the chance." she said confidently. With herself, two Clarks, Chris, Jor-El and Diana, plus Bart, couldn't forget him, they would surly be enough to stop him. "You're out numbered. You might be stronger. But you're not stronger than all of us together."