My wife was like this when we met. She also grew up more poor than me. I still see her washing a lot of stuff by hand that should be in the dishwasher. Old habits die hard. The unspoken agreement is when we run out of a utensil, or get down to one, we run the dishwasher.

One thing my mom taught her through me is not putting good kitchen knives or any wood through the dishwasher.