Gallant published many, many stories for The New Yorker (which may consider unlocking some of them, yes?), including “Florida,” which you can read here.
Gallant will be remembered for her short stories, of course. her Paris Review interview:
With few exceptions, books of short stories seldom sell well. Short-story readers are a special kind of reader, like readers of poetry. Many novel readers don’t like collections of stories—I think that they dislike the frequent change of time, place and people. Of course, stories should not be read one after the other. A book of stories is not a novel. Someone once said to me, “Katherine Mansfield died before she was ready to write a novel. Perhaps she would never have been ready.” I thought that was just stupid.