today was my last day of school. My mom offered to take my sister and i out to lunch for the half day, then get me some new close for sleepaway camp. Once we got to the resteraunt for lunch, i was acting a little nasty to my sister by calling her a loser when she annoyed me. I was a little moody/nasty with my mom too. After this, i really did feel terrible for what i did, but i dont think my mom sees that...Also, tomorow I have a concert that my friend invited me to for her birthday. I want to go super bad, but now my mom isn't letting me go!!! what do i say to my friend??!! The concert is tomorow night, and i havnt daid anything.Im trying to convince my mom, but shes not buying it to let me go anymore. Im sooo upset and crying in hysterics. I really am sorry, and not just using my mom so i can go to the concert, but how do i express this to her? HELP ME PLEASEEE!! and fast... the concert is june 25th,09!!!!(tomorow!!!)