I have noticed that my spouse will keep me from sleeping for days, at times. Maybe I'll get three hours per night for 4 or five days in a row. She sleeps during the day but I have to work. I feel like it clouds my thinking and decision making. It almost feels like a strategy on her part (although, maybe not conscious) to keep me on edge and doing what she wants. Is this common? I just don't trust my own judgement or assessment of these situations any more.
Been there, done that, unfortunately. My wife has BPD, and has for our entire relationship, but she didn't start intentionally depriving me of sleep until our daughter was born.
Just being in a relationship with a BP is extremely exhausting physically and emotionally. Add onto that the tolls of sleep deprivation and the fact that she doesn't work, so she's able to sleep during the day, and you've got a recipe for a disaster.
Have you confronted her about it?
Also, if you're working and she's not, do you guys have a joint bank account? Even if you do (my wife and I do), one thing I had to do was to create my own private bank account and have a significant portion of my paycheck sent to that account. I told my wife that I would make sure all bills and essential needs were taken care of, but her access to funds would be drastically limited until (insert your issue) was changed. I felt pathetic having to resort to that, but I was literally risking my life on long commutes due to lack of sleep, and it was all her fault.