But hey, do prove me wrong and talk to this girl. What's the worse thing that can happen? I mean, think about the opposite situation. What if a girl you're not interested in comes up to you and talks to you and implies she's interested in you? I hope you won't do anything barbaric such as humiliating her, you'll just be polite and talk to her and say you might still be a friend to her and stuff... Right? So talk to her unafraid, if you're actually AFRAID of talking to someone, then there's something wrong and unnatural about it. I mean, are you afraid to talk to your parents or your friends? No of course not. So if you want a relationship with this girl to work out, then you must not have worries in your mind when talking to her.
By the way, Chaltab is right. You shouldn't have posted her photo here... Edit your post and remove it...