Answer:
The narrator is: providing her view of the world.
Step-by-step explanation:
The first way this shows is through the use of the personal pronoun "I"
In the text above, "I" can be seen when quoting the narrator: "I had never seen so many stars. When I looked for a spot where I might stick an extra star if I had one, I couldn't find any space at all. No matter how small, an extra star would be out of place, I decided. The universe was one-hundred-percent perfect just as it was."
This is a first-person view point. The narrator has her idea of the world and she was expressing it.
She started off by expressing her surprise at the number of stars. She went further by showing how carefully she was observing the sky by saying "When I looked for a spot where I might stick an extra star if I had one, I couldn't find any space at all."
Once again showing her view.
She rounded off by saying the universe was perfect the way it is. That is a statement one can only arrive when they view the world through their own eyes. This is because, to another person, the universe may be imperfect.
She wasn't communicating a desire for change, she thought the universe was perfect as it is.
She also wasn't displaying learned knowledge, she would have used data or scientific statements to back up her claim.
Neither was she expressing doubt in herself, nothing suggests that.
Thus, the narrator was providing her view of the world.