Upon reading this chapter again, I've noticed Miyu saying Nozomi's kindness changed her. Interesting, this seems like it tackles the reason why Miyu loves her, and we never had any clue about it before. I wonder if the author intends to show that into a greater depth, because it definitely sounds like something that can and should be addressed.
Also
-I love you
-I want to stay friends too
Given her response to that, Nozomi's interpretation of Miyu would be "Despite me leaving, I love you(as a good friend) and I want to keep in touch with you regardless"