One patient made a big impression on Duchess Catherine (aka Kate Middleton) during a visit to the Royal Marsden Hospital last month -- so last week, she sent him a personal letter.
Though nine-year-old leukemia patient Fabian Bate (pictured above) only asked Kate to comment on his blog after their meeting in September, she did one better by sending him a letter typed up on St. James Place letterhead and hand-signed by Kate herself.
View the letter below:
"I very much enjoyed meeting you," she writes. "Despite the enormously demanding course of treatment you are undergoing, I was so touched by your strength of character ... I will keep my fingers crossed that your health goes from strength to strength."
Kate also praised the hospital, saying "I know I left The Royal Marsden assured by how incredibly talented, kind and clever the team at the hospital are. Combined with your belief and positive energy, you couldn't be in better hands."
"The thought that someone in her position would take that personal interest is a real hope-builder," Fabian's father tells PEOPLE.
One of Fabian's two sisters were recently found to be perfect match for a bone-marrow transplant. According to PEOPLE, a test this week will determine when he'll be ready for the procedure.