Let me give a different opinion. I don't believe you are obligated to give the class again just because this student doesn't remember how to do the project. I assume it was a day long class. I would find out as much as possible about the difficulty she is having and then decide just how much time you want to spend. The most I personally would consider is to show her the steps from your samples, look over hers and spend 30 min to an hr. But first I would ask her which parts of the pattern she is having difficulty with....direct her back to the pattern so you will know where to start.