<human>: Can you give me the gist of the text in a nutshell?

I apologize for the title ahead of time. I didn't know how to explain the issue in a short, non-vague way. 

We both have very different levels of energy. I'm typically full of energy all day and don't go to sleep until the wee hours of the morning if I'm alone or with my friends. She's usually tired all of the time and tends to fall asleep fairly early, even on weekends. From the beginning, I've compromised my sleep schedule so that I can sleep with her, as I really do enjoy falling asleep/waking up with her, but I feel like it's wearing on me socially. However, I've noticed on nights that I don't hang out with her or stay the night with her, she'll go to bed around 4am. A good example is from this weekend. On Friday, we went out to the bars with friends and she wanted to go home at midnight. On Saturday, I was too tired to meet up with her after work, but she was hanging out with the same friends until 4am and sending me texts/snapchats the whole time. I'm starting to feel offended that she always seems too tired for me, but is completely fine when I'm not there. Am I being unreasonable? She understands I'm a night owl, so she knows I don't benefit from going to sleep early.
<bot>: Girlfriend goes to bed very early when I'm staying the night with her, but stays out/awake incredibly late when I don't. Feeling offended.