I got spanked for something i didnt do!!!?

This afternoon, my brothers were playing football inside the house even though my mom always tells them not to. They broke my moms favorite vase thats some family heirloom or something. She was furious and called us all into the family room. She showed us the broken vase and said,"WHO DID THIS??!!!" Not wanting to get in trouble, my brothers all said that I did it. My mom asked how it happened so I said,"It wasn't me, it was the boys!" but she didnt believe my because all of them said I did it. My mom said I was in BIG trouble and my brothers knew that meant i was probably getting a spanking, so they started making fun of me behind my moms back. My mom dragged me over to the stool and started spanking me with her hand. She told me to stand up and then got the hairbrush. I was totally shocked when she said,"Take off your skirt." Not wanting to get in more trouble, I did so, and she gave me like 25 super hard swats. I thought it was done, but then She continued to spank me with her hand. Then she made me stand in the corner facing a wall with soap in my mouth for "lying." My mom has never given me that harsh a spanking before and im really pissed because I DID NOTHING!!! Now my butt hurts and im sitting in my room crying. My mom came in and apologized she had to do that, but said i needed to learn a lesson. I knew shed probably spank me again if i insisted it wasnt me, so i just nodded my head. Im really sad right now. All of this is 100% true and I REALLY didnt break the vase. );