This is rubbing me the wrong way. Am I overreacting?

I subbed for this teacher last week. Her desk was an absolute mess. Immediately I saw a packet that had a sticky note asking for 15 copies and I was like “okay no prob” so I made them. I just got this text this morning. I did not see this other pile she wanted copies of. Idk I just feel weird about this text?? It kind of rubbed me the wrong way?? When I was a teacher, I firstly, I never would have asked a sub to make my copies for me, and second, I would have never texted a sub like this