My partner and I are both graduate students in the sciences. She's been sleeping really irregular hours, sometimes working until 5 am. I function best maintaining a fairly consistent schedule and getting 7 or so hours of sleep per night. I also sleep lightly. So when she comes home from lab at unpredictable hours and is moving around our apartment and lights are on, even with earplugs and the door closed I wake up. I end up feeling resentful. Tonight I've only slept 3.5 hours due to this issue. In her lab group she gets away with catching up on sleep at whatever time happens to suit the schedule she's keeping, but in my lab I'm accountable for being at meetings or being around lab to help lab-mates during the day, and I also run a student org with various commitments. So I can't just sleep during the day if I slept poorly that night. She is not really hearing me out when I ask her to try to keep a more typical schedule for my benefit, and I can understand the pressure of grad school making her feel like she needs to work however is most effective for her. What can I/we do? I'm so tired...