For the first hundred years after it was written, "Goblin Market" was read almost exclusively as a children's poem about the importance of sisterhood and sisterly heroism. In fact, you can still find greeting cards with the final lines of "Goblin Market" written in them. Just check out the "sister" section of a rack of birthday cards, and you might find one. But what's going on with these two sisters? All of the similes suggest that the two of them are virtually interchangeable, and yet one of them succumbs to the temptation of the goblin fruit, while the other stands firm.