<human>: Give me the gist of the text in a nutshell

So well, I met her a year ago. We are just friends because it's nearly impossible to have a meetup and a LDR probably wouldn't work well (we didn't talk openly about this, but that's more or less the idea I got from our talks).
I feel like I want to be more than friends with her, sometimes there were like "signals" that she wanted too.

We had some arguments that were solved more or less and we continued our friendship. Now, after our last argument, she didnt want to talk as much as before, she was busy with school (I know you may think she could make time if she wanted but having great marks was a huge priority to her and I didn't want to cause trouble so I just let it be that way). 

 she finished school, at first she was interested in talking and so on but one day she just started to talk less and spending like an hour to answer. Maybe she was doing another things, so its okay.

But, we didn't talk for 3 days (we talked daily), then I send her a message, she doesn't reply, I ask what happens and all goes crazy. Now she just replies to direct questions, when I recommend her something to read she just doesn't answer. She doesnt want to have a conversation, just stops talking.

For me it seems she just want to disappear, but I liked our friendship and I'd like it to continue. I also wanted to understand what happened, but I'm unable to know it, she doesn't want to say anything about it. The day all went crazy I've asked that and it didn't went well.
<bot>: My friend doesn't want to talk as much as before, even though she is not so busy (at least it doesn't seem so). What do I do?