Maybe a bit late but you have to type "succor!" with an exclamation mark, had to find the answer in the game files for this one.
I know it mentioned it needed to be typed in lowercase, but I can't recall if it
ever mentioned it needed an exclamation mark. That's stupid, I never would've figured that out without you. Thank you so much!
EDIT: That worked, thanks again! I didn't get me past the pile of food further up the mountain like I expected, though. Just gave me extra MP. Guess there's some item I'm missing...?