Personally I love Asami and Masami! But as for where she was during the attack, my guess is that since they were in a special booth, they got escorted out to safety. Plus Hiroshi is working for the equalists, since Asami didn't know about that, he probably was safe the entire time, but got escorted out to act like he wasn't a part of it. I think Asami is who she says she is, just the daughter of a man who lost someone he dearly loved and made a huge mistake. But just because Hiroshi is an equalist doesn't mean she is too!