Is it normal for an ex to friend request you after a year of no contact?

I posted here before about this but there's a new development to the story. She dumped me March, 2013. I decided to move on August, 2013 when I called her up and told her I wasn't interested in being just friends. She said it's best that I do move on but was very proud of me and wished me well. 11 months later (July, 2014), she texts me basically asking how I'm doing. I first replied "Hi who is this?'" because I deleted her contact info. She didn't respond but I recognized the number. A few days later, I texted again asking if this is her. No response. A month later (yesterday), she friend requested me. I accepted it. She still has many of our photos up. Even her cover photo is one I took of her when we were at the park. Now all of a sudden she tags me along with several other people in a random photo of her room. I might be interested in seeing her but not as just a friend. I told her last August I'm not interested in being friends. This is all surprising because before I moved on, she would never initiate like this. What should I make of this? Should I wait until she contacts me directly or should I contact her directly first?