Title basically says it all. She goes to sleep really late sometimes for absolutely no reason. She constantly complains about being tired, but does nothing about it. Also, it gets annoys me when she just doesn't think straight due to fatigue when she's talking to me sometimes. 

She seemed pretty pissed about it yesterday. When I asked her about it today, she said it was fine, but asked to switch the subject pretty quickly (during this time, I apologized profusely about harsh it sounded and I only asked her to do so since I care).

AITA?