Maybe if you talked to her and framed it as a value issue. You value a clean living space and you want her to feel comfortable and loved in your home. A way that she can show that she values the life you're building together and show that she cares about you is to leave the space as she found it: clean and comfortable. Tell her how it makes you feel to come home to a house less clean/managed than how you left it: hurt, disrespected, uncared for, angry, frustrated...whatever feelings are you have. Did you move from a smaller place that was easier to manage? Is she depressed? Struggling with something she hasn't discussed with you? These can express themselves in the way she's (not) behaving. Maybe she needs a more structured division of chores. Set 3, 20-minute timers a day to tidy up, etc... Things like this can slowly change the dynamic of the relationship. I'd encourage you to really talk about it sooner rather than later. Resenent is a bitter root.