Did she/Does she like me or is she just flirtatious?

I met this girl some months ago. I only really got to be around her for about a month before I had to go away for 4 months and that 4 months is almost up. First off she is this adorable petite girl and I find her absolutely GORGEOUS, I would have gotten with her if I hadn't been leaving for months, I didn't want to get with her and then just leave, I feel like that would have been ****** up. Anyway the first contact me and her had was with a group of friends, she took my phone and ran off just as like playing around. Eventually she gave it back lol. The next time was with friends again. One of my guy friends was acting kinda gay just to be funny and he put his hands on my hips. A minute later when she came by she ended up asking what he did and I showed her by putting my hands around her waist (Mmmmmm :) ). Since then she has been to my place to watch movies and apparently been comfortable enough to pass out and take a nap in my bed lol. Sometimes in a social setting on a couch or in a car she would put her legs across my lap and I'd kinda rest my hands on her lower thighs and rub them a little bit and she never seemed to mind. Also sometimes she would bite me and we would tickle each other. You're probably thinking "Duh, she likes you!" but keep in mind she's a pretty outgoing girl, far from shy, and she seems pretty comfortable around guys, NOT like a ho or anything, just really playful. And I feel crazy about this girl but you have to understand I was really hesitant to start anything official and then up and leave her. So now I'll be back home by the end of this month and I don't really know how to touch base with her again, it frustrates me so much, I wanna tell her I'm sorry I was so hesitant before and I never should have left without kissing her goodbye, I just have so much I wanna say to her and I don't know how or when to say it, or if it would even be appropriate anymore. We've been texting since I left but I can't tell how she feels about me that way.