In real life, she wouldn't go through the things she had, and would be a different person as a result.
You know, Sarah Connor wouldn't change from a diner waitress into a berserker commando if she wasn't hunted by a cyborg Austrian oak. That's why fictional characters in surreal settings can't really be judged in a RL light. Still, Nina's pretty normal when it comes to school and casual life in any case.
Aw jeez, smells like the derail spirit..
On another note, I'm also happy to see that Naruki is only second to Nina.
