Hi Bellis
Just thought I would pop in and say hello,and offer you a welcome
I cannot help you with your posting,
I am assuming your mums twin will donate stem cells!!!!!.
If it is ,it sounds wonderful to me,I hope it works out for your mum,and someone is able to give you some help,Any advancement on treatment,is something we all like to know about, keep in touch and let us know,what happens.
best wishers Eve