Am I on the right track?

[MrBond]

"I don't really lose my temper in interpersonal relations."

What do you mean you don't "REALLY"? Either you do or you don't.

"I did not have a short temper with my wife. I did not yell at her or have angry outbursts. She didn't really ever make me angry anyway."

Just to clarify... anger is a choice. Another person doesn't make you feel angry. That's something you do to yourself.

"I really and truly have no idea what her complaints would be."

So the two of you NEVER argued? You never heard her complain about something but then blew her off because you didn't think it was important? You never heard her make a negative comment and then you when you asked her what she said, she would reply with 'nothing'.

It hardly seems likely that the only conflict you had was 13 years ago.

Much of your comment is from YOUR POV. About how YOU didn't have any problems with the M. There's ALWAYS something.