Nothing will work. If you are quite comments will be more intense. If you argue they will argue till you stop and continue. If you go out, it is a temporary relief. Once you are back it will start again.
Naging will be about your parents, not enough shopping, not enough money, children not having this that, you never buy me anything blah blah.

Solution" Wait for your kids to be settled and then leave her for last few peaceful years.".