One possible version:Sienna took one last look at her dress."I'm gladI was able to wear you,"she said,taking a couple ofpictures as a remembrance.Then she took it off andplaced an advertisement on the internet to sell it.Sheput it on a】platform where people could offercompeting prices,starting at $2,000.After publishingthe advertisement,Sienna rushed to be by Aaron'sside at the hospital.They stayed there the entire nightuntilSienna's mom picked her up.The next morning,Siennafound her onlineadvertisement had received a top offer of $4,200.She:immediately sold the dress to the person who'doffered the most.She gave all the money to Aaron inorder to contribute to his mom's treatment.Aaron andhis mom were very grateful to Sienna but felt terriblethat they had nothing to offer her in return.But Siennaassured them that they didn't need to pay her back.She told them:"Aaron has been nothing but kind tome.He's my best friend,and friends help each otherout during difficult times."
