biiiiiiiiig hugs
you are so brave for doing this. I don't know for definate but I think sometimes you can testify behind a screen or even from another room via video link (someone please correct me if I'm wrong) if this is the case is there anyone you could talk to about this option? It may make you feel braver and more comfortable. I'm sure your mum means well and simply wants to see the man who abused you punished. She may also feel you might need the support if not during then after. I'm sorry I don't really have much to say but again you are so so brave. ^^
As far as I'm aware that is an option sometime yes as it was,something they discussed with me :)