It takes two the tango, bro. If he's not willing to talk to her she's basically in the dark about what her husband's life is like when he's away from her. A marriage isn't just about loving someone right now at this moment. It's about loving who each other become in the future, and if they're not talking to each other or spending time together, how is she supposed to even know who he is now, much less love that new him?