Gf not responding after break...?

Firstly, the break we took wasn't due to relationship problems but because my only phone with her number broke and my mom threw it out before I could back it up, and we're kinda far from one another. But luckily due to ingenuity I managed to get it back, but unfortunately we weren't able to talk at all for the majority of the Summer and she wants start from beginning while I wanted to start left off. Now three days ago we were texting and joking, and my phone died so we couldn't say good night (I was at a friend's with no charger), so I texted her the next day but she didn't respond, so I gave her a day so I wouldn't seem clingy and just texted her an hour ago, and still no response, andshe usually will respond immediately, or not at all. Now this isn't the first time I've fallen asleep/my phone has died on her during conversations, so I'm stumped on what it is...