There have been countless times I have gone to the store for something or several items and forgot one thing or another. I usually make a list now.
My wife makes a list too, I'll even ask her if she has put whatever on her list and she'll say yes. Still comes back without it though.
Your wife and myself and can work as a team for grocery shopping. Then I can always ask your wife, "Did we miss anything...?" and she'll say "Nope!"
Don't believe her if she does tell you that Syav.