We met at school, winter break starts. I'm really awkward on phones and she's in the backwoods of America. How do I not mess this up?

I'm a college student. Around the week of finals I met this girl and we hit it off very well -- we hung out a lot, and by the end we were at the stage of acting a lot like a couple but not being official. Over winter break we've been texting, but video chatting and calling has been hard because due to her location and going back and forth between houses in the holiday season, she can go a few hours without cellphone or internet service. I've called her twice since then (which was last friday), and I leave tons'o cheesy facebook videos, but I feel like I should be doing more, somehow. But I also don't want to come off as too clingy. What do I do? Is everything okay here?