Analysis / Fringe

I am seriously confused and utterly surprised about how Olivia in the beginning of season 2 doesn't investigate why she was in New York when she was in that accident? Yes, she suffers from a short term amnesia but that's in connection with the alternate universe, surely she should remember that she was in New York because Nina Sharp invited her as this was in the primary universe!

Even if she doesn't remember, how come Broyles doesn't think its worth investigating why she was in NYC in tbe first place as Olivia seeks permission from him to go to NYC?

Wouldn't that been easier then to revive Olivia's memory?