I'm actively trying to sabotage the relationship between my wife and her mom
Why are you trying to sabotage their relationship?
Because if my wife is mad at her mom, she works more around our house.
You shouldn't destroy their relationship over your own selfish reasons. They will resent you for trying and not talk to you.
I don't care about their likes and dislikes.
It's a poor use of time to mess up other people's relationships. The world would be a better place if people spent their time supporting other people instead of making their lives worse.