There are so many things to learn...... :)
Being on the SEN register is a paperwork exercise.
It normally happens the other way. They decide she needs help, then they put her on the SEN register.......
Or sometimes they're already giving her help, and then they decide to formalise it by putting her on the register.....
Put lots of energy into High School. Make an appointment with the SENCO there, and tell her all of your concerns.
My 3 kids have Aspergers, dyspraxia and dyslexia (between them). And I've found school can't help them - but I can.
ie, no matter how willing and helpful a school is, there's still very little they can do for those conditions.
I've done loads and loads and loads of 'alternative' therapies, and had great success with them. My DS1 now has no problems at all at school. I'm currently fighting to get him off the SEN register :)
Anyway, what I really recommend you do is start to research therapies that will help her symptoms.