My sister is really blowing me right now 🙄🙄

I told my sister ill watch my nephew so she can work today and tomorrow. I told her that I would drop him off after she got off cause I was going to the movies, she turns around and says she will just come get him cause she has a birthday party to take him too. She goes to say well since you not gonna be home can you come back to pick him up. I told her no. (She stays 30 minutes from me and I picked him up last night so she wouldn't have to drive), I gave her the option of staying at my house until I get back (the bday party is on my side of town) or dropping him off at 10 when I get home. Am I wrong here or what?