It sounds like you had a satisfying visit to Dr Hakim, which is such a relief when you've been going round in circles for so long. I agree, Dr Hakim is lovely and completely understands.
What was the article about exactly? Was it about HMS generally, or Autonomic Dysfunction with HMS , or something else? It sounds interesting.
As for your GP saying that Hannah's joints will stiffen up as she gets older, well we do become less hypermobile as we age, but unfortunately that doesn't seem to decrease our pain or other problems. Factors that influence this may be that we may have caused some damage through various injuries and we may have early osteoarthritis. What may well help Hannah are the steps that Dr Hakim has begun to take - physio, podiatry and pain management.
At least now, Hannah will begin treatment that can improve things for her. I'm really pleased for you both.