<human>: Can you summarize the given text in a few sentences?

So i recently started talking to this girl I've known when I was a kid. She was My girlfriend when we were about 14 years old, But ended it when she moved to another city and because pf being young kids and so on, life continued we lost contact. But we recently became friends on Facebook and started talking again. Been talking and texting pretty much every day for two months. She lives about 1,5 hours away and we started talking about meeting. She was supposed to come over last weekend, but came up with some wierd about having to pick up her best friend from the airport, and tells me this the evening before she was supposed to come over. 
she said she is really sorry but says she really wants to see me and promises to come next weekend. All was good and she was beeing like normal. No signs of being insecure, getting cold feet or anything. 

She has now stopped replying to texts and it's really wierd, she usually replies pretty much right away usually. I know her phone isn't broken. 
What should I do?! 
Should I call her/text again (sent one yesterday asking what's wrong but got no reply)
Or should I just keep quiet and take it as she just out of nowhere lost all interest and decided to never talk to me again?

Thanks for any advice!
<bot>: And old really good friend/Girlfriend  suddenly stopped talking talking without any reason. What should my next move be?