Cool, cool, cool... Eva nodded, eyes in a blank stare as her brain did the quick math of what had been said. Billions. So at least a quarter of the planet - so far. She didn't want any specifics, though. Not yet. Probably not at all. Zap didn't need to know if her daughter had survived.
She snapped back into the conversation at the mention of Magneto. "Don't tell Erik anything," she said, partly in jest but mostly in seriousness. This wasn't something to spread around the school - especially not to certain parties. Apparently like... Jean.
"Wait," she cocked her head back and shared the glance with Nate as they both remarked at once about Jean's 'possession'. The combined ideas of 'planning a proposal' and 'something evil ensnares the school' caused Zap to break out in goosebumps. She reached to the side and took her Nate's hand, holding his thumb with all her fingers in the usual manner. "You-" her pursed, prepared-to-speak lips halted in their attempted comment on the topics of proposals and evil, because the next thing Nathaniel said was his intent to murder her friend, teammate and colleague. "Surely you came back far enough in advance to stop the evil instead of Jean? If she doesn't get 'possessed', then there wouldn't be any reason to take her out of the equation..." Right? "Also, no." There were obviously horrendous, dire consequences for the X-Men's oversight... to the point that her father and her... husband... had planned to murder one of their own in the past. The two incredibly intelligent and magically-inclined men (and probably others, she hoped) had no doubt considered all other options before coming to the current plan. So, overreacting wouldn't help her case. Her hand squeezed Nate's thumb, though, and she felt less like giving the other man any sympathy.
Her feet seemed to attached themselves to the floor as her posture stiffened. "Until we've exhausted all other options, that statement will not be repeated - in present or other company." She wouldn't hear it.