My wife is basically disconnected from our finances. I've tried showing her my intricate spreadsheet, and she just doesn't care at all. Her words: "I just don't want to care about money." Totally fine.
So, I've asked her, "when do you want to retire?" She responded "when the girls are done with high school." That puts us around the late 2030s. So basically I tell her, I'll get us there, and I'll keep the budget in check, and we'll discuss big purchases together, and we'll see how things shake out year over year. Around tax time, she gets a little curious, we align to where we stand at that point in all financial matters, and that's pretty much it for the year. It works for us because we make more than enough money to cover saving for retirement, childcare/private school, and travel. The balance is invested.
We're likely to be FI in about 10-12 years, faster if we make more money, and I've decided that I'm not going to stress her out about each line item in our budget. I just keep her in check at times...no we don't need a couch from Pottery Barn, our current cheapo one is fine because the girls will inevitably color on it or something. Or, no, we don't need to gut remodel our kitchen, we can paint cabinets and throw up new backsplash for a fraction of the price. And in the background, I'm optimizing our bills where possible.
Obviously if OP's wife is one of those "if I have money it's getting spent types" then you have bigger problems that you need to align to, and the posted link would be very helpful.