Charles was correct in one way. Angelica wouldn't have understood why death was something to consider over the feelings they both currently possessed. It was awkward sure, but that was mostly because they seemed to be reacting to the situation much differently than two people who would have understood what was happening. Of course, she was also something other than human and though she didn't understand that as a full truth, she knew she didn't possess anything near shame for her actions nor her feelings. She only managed to harbor a bit of confusion and had a plan to have that taken care of at some point.
Moving on, she had a random question for Charles about the sky. She had only a few solid memories of her life before coming to Aincrad, this of course included what her mother looked like, the sound of her voice and the feeling of her mana. Everything else was lost to her for the most part. So her life within this little bubble of created life support was all she knew. This sky was the only one she knew and many other things she only understood within the confines of Aincrad. As such Charles words were rather enlightening. He claimed that this sky, looked like the sky outside, but that there was so much more to the other sky. It was endless and full of things and extra feelings. Angelica couldn't even put together enough of that to figure out what it might be like. "Endless, huh?" she asked. That was a strange thing to note. She was more acutely aware than most that the size of this sky was an illusion. She had similar thoughts whenever she was outside at night looking up at the stars. "I don't know why that would be sad, I've only really known the floor I live on," she explained seeming not to realize exactly how bleak her life was by comparison to those who could freely move about. "I was just curious, I like watching the stars, but I can see where the sky ends here... I wondered if there was something more to what outside was like. I mean if all the floors here are so different I assume outside can be really different too..." she explained of her thought process.