Two Tired....Would you want her stuff piled in your space?
It is
OUR space. And, we share. She has stuff in the garage too (our washer, dryer, freezer, and shelves), as well as space inside the house, as do I. I have a workshop room, and a computer/music room. Mostly my stuff, some shared. We both cook, share the kitchen. We both sleep, share the bedroom. She is welcome in all these spaces and my life.
I don't rule her, she doesn't rule me. We make joint decisions about things.
Lucky,
Do you live alone? Or prefer such?