When they called my mum to be a witness she denied it. What should i do?
Hi and good on you for writing in. It sounds like a really difficult situation.
First of all, no one has the right to abuse you. It is against the law and definitely not okay. It was very brave to go to the police. Remember that just because your mum denies it, doesn't mean it didn't happen.
The first step is to get some good support. Unfortunately not everyone will be supportive during this process because sometimes they find it hard to believe what has happened. Because you are living with your dad, ask yourself if he may be supportive and if it is safe to tell him. If not, seek support from a trusted teacher, friend, family member, police officer or find a counsellor at your local youth service to talk to. Having support from a counsellor can help to sort out what's going on and provide you with strategies of how to manage things.
There's a lot on your mind right now and it sounds like a very distressing time. Check out the services directory for youth services in your area that offer free and confidential counselling. If you are feeling down you can call the Kids Helpline on 1800 55 1800 for a free (from landlines) and confidential chat.
I hope this helps and you find someone to talk to about what's going on. Take care.