@unniechan well you gotta keep in mind prior to her reincarnation she was 25, and her introduction to cesar proper was when they were both 12, so from her perspective she's been a doting older sister type. it's hard to divorce(pun intended) that from herself
@unniechan for what it's worth though, it doesn't take much longer for her to become cognoscente of him as a man rather than a little sibling (and that he's actually her type in every aspect)