Slater was responsible for trying to cure Martin Fitch's mental disorientation after Scarlet Fitch's sacrifice, which manifested as self-harm. After he missed a string of appointments, Slater sent Fitch a letter expressing disappointment, emphasizing the need for regular psychiatric consultation in order to improve Fitch's mental condition. While Fitch did receive the letter, it is unlikely that he heeded Slater's advice, given the condition that Alex Shepherd sees him in during the events of Silent Hill: Homecoming. This letter was later discovered by Alex in one of Dr. Fitch's examination rooms, along with a small key that is used to unlock Scarlet's safe.
Dr. Slater's Letter
Dear Mr. Fitch,
I was so disappointed that you missed our appointment last Thursday. This is the third time in a month that you've not appeared at the allotted time. I implore you to reschedule as soon as you can. We've made such progress over the past few months - I can't stress how important it is that we maintain regular contact to ensure a speedy recovery. I look forward to seeing you soon.
Sincerely, Dr. Slater
Chief Resident Psychiatric Department Alchemilla Hospital.