In O Henry’s story ‘The Last Leaf’ Johnsy is compared to a goose. Sue considers her foolishness and nervousness to be goosey, when Johnsy was suffering from pneumonia and thought that she would die as soon as the last ivy leaf falls. 
 
On hearing her strange fancies, Sue told her “Oh, I never heard of such nonsense. What have old ivy leaves to do with your getting well? And you used to love that vine so, you naughty girl. Don’t be a goosey.”
 
I think the comparison was appropriate enough as Johnsy was very ill and weak and the fever had left her morbid and full of strange fancies. She was dealing everything with pessimism. She lost the hope of surviving and refused to take the soup her friend offered. She was too nervous, a quality considered to be characteristic of a goose.