I agree with those who said you should agree to get a housecleaner.
You seem concerned that she doesn’t want to take care of the house. But even if she has a housecleaner, even one that comes let’s say more than once a week, there are still so many things she’ll have to do herself. A housecleaner can’t do everything.
Most importantly, read and put into practice the teachings of the book Garden of Peace by Rav Shalom Arush. I won’t describe the teachings here because the book is supposed to be read by men only, and that’s for a good reason. But I strongly believe his teachings are truly the key to shalom bayis.
Shalom bayis is not a common sense matter of doing what seems right to you at the time. You need to understand the underlying principles, something the book does really well (and unlike any other shalom bayis book.)
I have realized I was doing many things wrong, and whenever something goes wrong with shalom bayis I realize it is because I failed to fulfill the teachings of that book. Conversely, whenever I do what the book says, my shalom bayis problems go away just like that. It’s that good!