I am not too sure about more than one female dorm on campus. Have no knowledge on that. By careful in choosing a place I mean if you have classes at night time & you plan to walk back to the dorm or your apartment whatever. There have been times when a student was walking alone back home & as soon as she opened the building door. Someone grabbed her from the back. Covered her face & took her to her apartment. Assaulted her & robbed her. 5,6 incidents in the past 2-3 years to be exact. Just make sure whatever place you choose the entrance is well lit up at night time too.
Oh & I don't mean to scare you. The area around Northwestern is considered one of the best around Chicago in terms of safe neighbourhoods but not even 3 miles far there are these 5,6 bad blocks where you can see homeless people walking & all. All incidents had something to do with homeless people. Just giving you a heads up on that.