I'm trying to remember the author of a first contact story from the 50s or 60s. I think it was called "The Grantha Incident" but can't turn up anything with that title. In the story, a spaceship breaks down near an isolated farmhouse. The farm couple meet the aliens and find they can understand them even though they don't speak the same language -- they realize that their engine has a problem; the farmer helps the male alien fix it while the farm wife takes the female alien into the kitchen to warm the alien baby's bottle. Then the guys have fixed the engine & the aliens go on their way. Others saw the ship land, and reporters soon show up. The farmer starts to explain that it was just a little mechanical trouble and they sent these nice people on their way, but his wife, who is very lonely on their isolated farm, retells the visit so that it fits the common "alien visitation" scenario so that people will come and visit them.
My first two thoughts for authors were Shirley Jackson and then Avram Davidson, but I can't find it in either of their bibliographies. I may have the title wrong as well.