Its safe to say that she is talking to you more and more regularly and would like to talk about more than the latest Superman comic. Let her. Dont stick to the fandom like its some sort of glue thats keeping you together. Explore each others interests outside the fandom and get to know one another on a deeper level. Does she happen to cry in every episode of Greys Anatomy? Perhaps she has an intense hate for Kim Kardashian that you both share. Maybe she likes chocolate brownies. Talk about that too.