Andrew Gideon writes:

Take along your flight instructor for the first trip as a "thank you" and
as a way to ease your wife's concerns (and to make the trip easier for
you.)

Hmm. "I don't trust myself"? Not perhaps the best message.

Then don't send that message. I took flight instructors out with us on
lots of flights. My wife liked it and we had a great time. Having someone
around to file IFR sometimes comes in handy for a new PP.

--kyler