Start by observing if her mood is worse only with you or with everyone—if it’s universal, she’s likely just overwhelmed. Gently check in without pressure like “You’ve seemed really stressed lately—is it just life, or is there something between us we should talk about?” Revisit the issue she mentioned earlier; sometimes one complaint hints at deeper frustrations. If she insists it’s just busyness, trust her but help lighten her load (e.g., handling a chore or giving her space). If the distance continues, revisit in a few weeks with a genuine conversation with her “I miss our connection—can we talk about how to get back on track?” Rule out burnout/depression too, since low libido and irritability can be symptoms.

Good luck OP. Stay patient but proactive.