One professor... :-S

At my university there is a professor who hasn't been there since the start of the semester. She really seems to be ill and I mean seriously ill.
OK, nothing wrong with a professor being ill from time to time. But what if this professor holds one of the most important subjects? Don't forget you have to write an exam about all that at the end of the semester... Well we already missed 40% of the lectures. Let's hope she'll be fine soon and I will pass the exam without any complications.