Acquaintance asking me to run errands for her party?
I have a friend who got engaged and her sister is throwing her a party. I have met my friends sister before only briefly in passing years ago. The invitation arrived and before I even RSVP'd, her sister sends me an email saying "I hope you can come. Will you please purchase and bring x,y,z party supplies? We have the rest covered and I have helpers." I just find it really weird that of all people to ask for help she asks me, whom she has no relationship with, when her core group of close friends will all be there. Additionally I live over an hour away in another city. I just couldnt imagine asking a guest whom I have no relationship with to run errands for me and on their bill. Is it normal that she asked me to do this?