How could a vacation imply anything about chronic illnesses or future pregnancies? I mean, of course there's a chance something might be mentioned as an aside,

How could a vacation imply anything about chronic illnesses or future pregnancies? I mean, of course there's a chance something might be mentioned as an aside, but it seems very unlikely. Visiting family much more often than not will just be visiting family. The tiny possibility that it might mean something doesn't seem worth the Q&A time. Why would anyone want to fire an employee who might soon leave off their own accord?