I am in really shocked to hear about the (mention the reason of writing sympathy letter). When I met your (relative’s name of recipient) two days ago in our college, she was fit and fine. I am very sorry for the (give the specific loss) of him/ her as I can understand the depth of your sorrow and troubles. I offer my sympathy for the bad health of your (relative’s name).
I am sure everything will be fine in a short span of time by consulting some good doctors. You need to be bold to handle these situations as your parents are staying far from you. I will pray to God for his/ her (recovery or bad health).
If you need any kind of help, please feel free to contact me at my (mention your phone number along with other contact details like email id).