@BEsafe; your friend is a minor and a victim; she is entitled to counselling, social services,and her parents present at every procedure. Police do not interrogate victims; the rapist needs to be arrested and brought to trial and then convicted.
There are many procedures in place to protect such a young victim. She is going to have a very long and painful recovery, but knowing that the monster who did this is behind bars will help with the healing process.