<human>: I've known this girl, let's call her Ann, for almost 10 years. We've never hung out or been even what I'd call friends. We're acquaintances at best. Years and years ago we attended the same social event and we danced together, which was odd I'm not a dancer. She initiated the dance with me. It was nice. After that we never talked much but remained Facebook friends. 

Suddenly like two weeks ago I ran into her somewhere. She was very happy to see me, it seemed. We took a photo together (She was dressed in a costume, which was why we took a photo) and that was basically it. I noticed she went out of her way to get incredibly close and even held onto my arm for a minute after. I dunno if that means anything but it stood out to me. 

When I uploaded the photo on Facebook she commented how happy she was to see me and that she was going to print it. Since then we've talked slightly on Snapchat but that's it. 

I really want to make plans with her. But I'm not sure how to go about this. Do I literally just message her and ask her how she's doing? I don't want to come off as creepy or anything. I'm just so unsure how to do this. I haven't 'dated' in like five years, all of the girls I've been with have been girls I've worked with and ever entered in a relationship with.

Condense the text into a few key points
<bot>: Girl I've known and had occasional interaction showed slight interest and I'm not sure how to approach her to hang out.