And if by chance they do come here, they will not have the same resources, and will have the law to face should they try anything against the people here. They will also have the chance to start fresh and change their ways, just as everyone should have.

[Doesn't mean he really believes they'd take it, but...yeah. Frankly he just wants her staying clear of the giant aliens and not risking herself for a grudge he doesn't even hold...]