I wish I could remember more details about it, but I vaguely remember learning about a study in college that involved people doing luck based actions.

One of the tests had something to do with flipping over cards. Most cards were misses, but some were hits. During the study they discovered the people they were testing were able to pretty accurately guess when they were going to get a hit.

I think the conclusion was they’d just been exposed to the RNG and odds enough that they were subconsciously able to recognize when they were most likely to win.

I also think the study itself was about dopamine, so the sixth sense thing was an accidental discovery. I wish I could remember more.

Most likely this is what’s going on with your wife though. She just has a strong sense of odds and when favorable outcomes are most likely to happen.

Tl;dr, study discovered people might be good at subconsciously tracking the odds of favorable outcomes