When I heard about your diagnosis, my heart sank. How could someone so young and so healthy be so sick? I'm terribly sorry that you have to pass through this trial.
I know the days ahead will be difficult, but you are strong and you can beat this disease. I am here...
Dear (recipient's name),
When I heard about your diagnosis, my heart sank. How could someone so young and so healthy be so sick? I'm terribly sorry that you have to pass through this trial.
I know the days ahead will be difficult, but you are strong and you can beat this disease. I am here to support you in any way that I can.
Sincerely,
(your name)