回複：請大家幫忙出出主意， 急！！！

I agree with Laomao. Also, you need to know that.
1. never be crying in the front of them.
2. the more evidence and proof you got, the more calm down you should have. When you are cool, they will be afraid of you, but neve be mad.Just get the biggest benift from that but never say something just for scaring them.越是有理,越要沉著,他們越怕你. All of all ,get a good lawer to help you.It is worthy. Let the lawer handle these things for you. never ever contact with the afreican tennager and his family by youself even they ask you.