My sister is the only person in the wedding party who hasn't ordered her dress. The dresses have been chosen for six months and they need to be ordered by the end of July in order to be here in time for the wedding. I'm not sure what the problem is, she helped pick out the dress so I know she likes it. If it were a financial issue I could understand but my mom is paying for it. I know my mom has offered to take her to the bridal store multiple times and she always says she is too busy. 
 In my mind, by not getting the dress she is making the choice to not be in the wedding party. My mom disagrees and wants me to invite her out to lunch and then stop by the bridal store to order her dress. She is a grown ass woman, I shouldn't have to hold her hand through this, right?