My eldest who is 17 signed up via the Anthony Nolan Website, they sent him a swab kit in the post, which he did himself and posted it back to them. Probably a lot less hassle than going to the doctor. When I signed up many years ago, it was a blood test, but things have moved on rapidly.
BG it would be very easy to take this the wrong way, in fact I probably have done. Your grand daughter is very fortunate indeed, as was a good friend of mine. Anthony Nolan is a bloody brilliant charity, which does some truly amazing life saving work, but this lady needs an almost perfect match...