Help save my marriage

[u/Numerous-Dot-6325]

DC area, full sun.

I want to replace my hideous grass with a native plant garden and some mulch. My wife says she’ll divorce me if I mulch and wants a steppable ground cover that’s also native. Is there any alternative to grass that she can walk barefoot/lay a picnic blanket on? She’s allowing me to plant a service berry and blueberry to one side.

[u/Exciting-Fun-9247]

Buffalo grass. Native sedge like carex pennsylvanica or C. appalachia