I guess professor does not have experience in teaching. She is not able to properly deliver the lecture, she herself is confused most of the time. Its a wastage of time attending her lecture.
Its better to study by yourself from book as her lectures does not contain anything new.
When you ask her some doubt, you will find that doubt is still doubt.
Moreover, she is very harsh to the students, in short not at all student friendly. She even does not listen to the student's problems. Her grading is also very strict. I will suggest not to take this course under her.