Why si she so afraid to talk to me?, to say I am sorry? Or is she even sorry, not sure of herself, or of me?

Known each other over 3 years, 1st 18 months, great. We spent so much time together. Then she moved to another country to work, we stayed in contact for just over a year,, every day, on the phone, text messages. 10 months ago she cut me off, said no more phonecalls, 5 months ago she emails as if nothing happened, she's been emailing regularly, but she won't answer my phone calls,,only emails, does not say anything about not answering my phone calls. 2 days ago I emailed, "I would love to see you. Can I at least hear your voice? I need to hear the sound of your voice; my favorite song in the world". 2 years ago, I told her that sounf of her voice is my favorite song in the world. Bottom line, she dumped me perhaps for someone else 10 months ago, then she started emailing, I am polite. I have forgiven her, did not tell her but I am polite with my email response, just small chit chat,, "hello how are you, I'm fine, hope your day is ok", that kind of thing. It kills me she's not answering