I agree with Allen: good for her! There is such a thing as a stupid question. If you can find out for yourself by reading the syllabus or *gasp* paying attention in class, it's simply lazy to email the professor to ask. There was a time, before email, when students couldn't ask a professor a question outside class unless they went to their office or called on the phone. It's better that way--students quickly learn to figure things out for themselves when it becomes less work than making an appointment. A professor's job is to get students to think and research, not to do the thinking and researching for them.