. Tell an authority, you may think they wont be able to do anything about it, but adults have immense power and can use it.
. Tell them to simply stop or walk away yourself.
. Tell your parents, they'll do something a bout it :)
. Walk with friends it the bully on bullies you.
. Get witnesses that you trust if anything happens at the scene the bully causes
. Stand up for yourself
I wish you the best of luck if you are the one getting bullied and if you are asking for a friend I respect you for caring for them and I wish all luck to them as well.
Don't deny the DVD. Show Sarah the mistake she made, but tell it was an accident and it is fine. Then, rub it with toothpaste and then carefully rub it back off, followed by a good rinsing in cold water. The scratches should be removed then, but this method does not work all the time.