Well, yeah, but... that's something that's already happened. Plasma revived Reshiram two years. You went away with him, but Ghetsis tried to use another Pokemon along with him...

[That's pretty much when she realizes that she's probably said just a little too much, and pipes down, looking distraught. She shouldn't have said all of that to him, especially when/if he doesn't know her.]

...Sorry. I just this to make sense...