There is actually a similar phenomenon with Merry at the Pelennor Fields, remembering Théoden's words to him.
Théoden had been as gentle as possible in turning down Merry's request to accompany him to battle, saying to him: "This is no journey for such steeds as Stybba, as I have told you. And in such a battle as we think to make on the fields of Gondor what would you do, Master Meriadoc, swordthain though you be, and greater of heart than of stature?" (803).
When Merry remembers this conversation, he leaves out the gentleness and courtesy and instead focuses on the part that he took most to heart, feeling "bitterly the truth of the old king's words: in such a battle what would you do, Meriadoc?" (837).
As edited, these words are shorn of (1) the respectful titles of "Master" and "swordthain"; (2) the seeming specificity about the kind of battle in which he might not be much use (due to his small stature), kindly leaving open the possibility that in other battles elsewhere he could hold his own; and (3) the acknowledgment that Merry's valiant, odds-defying courage (greatness of heart) is belied only by accident of physical limitations:
in such a battle
as we think to make on the fields of Gondorwhat would you do, MasterMeriadoc , swordthain though you be, and greater of heart than of stature?