We talked in class a lot about Denver's obsession with taking care of Beloved. At some points, it seems a bit creepy, but at others it's rather sweet. Denver seems to know the entire time that Beloved is her sister.
The way that Denver dotes on Beloved somewhat reminds me of the stories I've heard of how my older sister reacted when I was born. (Although Beloved is technically the big sister, she is mentally younger than Denver, and Denver takes on the role of big sis.) Before I was born, my sister was so excited. She's the one who named me. Every morning she would kiss my mom's tummy and say "good morning, Isabel Emma". When I was born, my sister was even more excited. She came to the hospital in a shirt that said "I'm a big sister". She brought me a little stuffed animal that I still have to this day. She wanted to hold me. When I came home, she wanted to help with everything. She helped my mom give me my first bath, and so on and so forth.
I think that the some of the ways that Denver dotes on Beloved are natural, big sisterly, and cute. I do think that, however, her desperate need for Beloved's attention is extremely exaggerated because of Denver's isolation and desire for someone to care about/notice/need her.