A student on one of my modules wrote an essay that didn't address the set question. It wasn't a bad essay (fairly well-written and had it been on topic it would have been a high 60s grade) but the link to the taught content and recommended reading was very limited. Student got a lower mark (50s) than they were hoping for, and much lower than they received in other modules.
I'm not concerned about the marking process - all policies followed etc. - but I found interactions with the student afterwards quite difficult. They sent me two pages of rebuttals, in a combative tone, and when I suggested they meet with me for a discussion this was also a bit confrontational (backchat etc). I am not used to students approaching me with an attitude of "you are wrong and let me tell you why", and I felt quite sweaty and stressed during the meeting (even though I am usually a very confident person). Does anyone have advice on how to handle this better in future?
For context, I am a Lecturer, 3 years into my post.