DD(13) needs to use an iPad for written work due to Hypermobile painful hands (EDS). We have earlier OT reports supporting this etc, plus a GP letter somewhere, she also currently gets a level of DLA
School have been great, she is just back after a very long absence & I can't fault the support - the problem is DD herself who is a stubborn moo I suspect due to earlier Primary School issues with bullying, refuses point blank to accept the help offered, insisting she is "fine" she isn't 
She has been told she can ask teachers for the iPad in each class, but she refuses point blank to ask at all, insisting the writing in each class isn't long enough - but its accumulative & I see her getting headaches etc as a result.
She wont accept/ask for help carrying books around either, which will no doubt get worse as she mives onto GCSEs etc
Sooooo - its her birthday next week - we've realised the only way around this is to provide her with her own iPad Air (lighter), so no need to ask & the kindle/ iBooks will cut down on bag weight too.
I've heard that we can go VAT/Claim it back? As its an aid she needs for her disability, but have no clue how to go about this ??
What do I need to do & what proof do I need to provide ??
TIA