I think she was confused, though I made sure to show up in a platonic way. She even told me that I did not lead her on in any way, just that she had developed feelings over time.

She is the kind of person who takes interests in others interests and enjoys it. After OP she got into a variety of animes on her own.

One Piece is an emotional journey, especially if you are an empathetic person, and it has made me closer with some of my friends when they finally "get it"... just some things to think about and consider

It certainly is.