Why did the woman remember James so well?

M: Do you know James? He is in your class．
W: Certainly, in fact, he was the first person I got to know in my class．I still remember the look on his face when he showed up late on the first day of school．

M: Why did you come to the meeting late?
W: Late? I think I’m on time．
M: Didn’t your roommate tell you about the time change? I left a message with her this morning．
W: She has a very short memory and it really gets on my nerve sometimes．