Ex best friend is still watching my snaps and I'm wondering why?

So back in Summer 2017, me and this girl I met at my job at McDonalds last year were best friends (I'm a boy and I was 17 and she was 15) but then we had a huge falling out in October, but we still followed each other on Snapchat. In November, I had another job and one day when I left she posted on her story a really grimy thing about me exposing my name out to all her friends and saying that I was "a fan of hers.", even though I never said anything about her and after that I unfollowed her. In January when I left for college, I was posting snaps and all of a sudden I see her name pop up on my list of people that saw it (I unfollowed her but she never unfollowed me I guess, or maybe its because my snapchat is public) and I was wondering why she watching it all of a sudden, even though I still wasn't watching hers. Flash forward to now, and she still occasionally watches my snaps and I finally looked at her slew of snaps last week when she was on spring break, so I guess her snap is public just like mine. I honestly don't know what this means...does she feel bad for our falling out and of what she posted about me those few months ago or is she jealous and want to see what I'm doing (we lived in GA but I left to AZ for college) or does she just want to view it just to see how I'm doing?