what is Dr. Fionas medical background?

I don't recall too much about her background in the book but this should help.

Dr. Reynolds is a graduate from Edinburgh University.

By coincidence, Fiona was in the Pakistani city of Rawalpindi that day – around 155 miles from Malala’s home in the Swat Valley – with a delegation of doctors from Birmingham.

They were there to offer advice on establishing a liver transplant unit and were meeting with army chief General Ashfaq Kayani as news of Malala’s attack was breaking. Check out more below: