she should just shut up and let him fuck her?? goodbye

You're not wrong though! All through this chapter, I feel like she still has zero understanding of what she's offering by being there to come home to. She's also the only woman he's been with. She's not cheating or plotting or using him, she listens when he talks, holds him when he sleeps, gives him a reason to fight, protect and provide and is grateful for everything he does. For a man like him, that's everything. Plus she has been very reliable and running the household. Thinking it's not enough is her hangup. Her sister would probably expect a husband to be grateful for half that.