I have a 9 year old daughter and I worry constantly that she will start to develop symptoms. There have also been recent postings on various pages (I know the NMSS had one, but I've also read it elsewhere) about the higher the prevelance in MS in kids is when it is the father who has it.
I can't pretend to understand how you must feel right now. It must be overwhelming, and you will definitely be in my prayers. I am a 40 yo. with MS, but I too have lost some ability when I have to keep track of multiple things. It is not all the time, so I feel like it's related to the MS. I would imagine that you just keep feeding her verbal list of things to do, but make her write them down as your telling her the list.
I have started making lists and it has helped me enormously. I imagine some of that is due to actually getting organized, but it really has. We camp a lot and here in the last few years I was forgetting stuff every time we would go. When I would pack, I would get confused and kind of mill about forgetting what I was looking for. I have since made lists I store on Word, and it has helped me not only not forget things, but also to conserve the energy of going up and down the stairs 20 extra time looking for God knows what.
I hope you all figure it out. You have a lot to deal with, but you also don't seem to be panicked, which is essential to deal with it properly. Good luck and God bless You and Yours.