Why it was so hard?

Why it was so hard answering Elena's questions? Is it because they were challenging? They haven't been challenging! So, why? Is it because I felt that she says something that she does not believe so and she might change her mind the next day! Might be this is the issue. Any way, I need to finish and finalise this part. So, I thought its a good idea to ask Jill (teaching & learning centre) to help me for rewording my questions. I hope I can re-send them tomorrow to Elena or perhaps Allyson.