Will this do?
Matthew Newman wrote:
“Heal X damage/horror” is shorthand for “Heal X damage/horror from your investigator,” in the same way that “Take X damage/horror” is shorthand for “Deal X damage/horror to your investigator.” If a card simply reads “Heal X horror” or “Heal X damage,” you can only use it to heal horror or damage from your investigator. Cards that allow you to heal other investigators or assets will specify that. So, for St. Mary’s Hospital you can only heal from your investigator.