Medical residency divorce rate

My wife is thinking about divorcing me after her first year of residency. We have 2 kids, ages 1 and 4. I'm not perfect, but I've provided for our family for years, her for longer, and I've quit my job to take care of the kids, after making over 500k last year. Her reasons for divorce are vague, nothing specific (besides I didn't clean the bathrooms well enough before her parents came for a visit, and I didn't go to the DMV for a year, and things that seem very trivial to me) We decided to have a child together less than two years ago and now I'm somehow the source of all her unhappiness.

Same thing happened to a friend. He made good money, didn't cheat, didn't abuse drugs, didn't abuse her - she divorced him right after residency.

Two other doctors I know - one residency divorce and maybe the other relationship too. Which would make 4 divorces during residency for the 4 doctors I know.

I'm curious but unable to find any statistics about the damage medical residency programs do to families and couples.

The only thing I can find is the Harvard study for medical professions half a century ago.

Does anyone know where I can find information about divorce rates for medical residents?