How Can I Help A Friend Get Over A Breakup Where She Was Dumped?

Well as someone who treasures relationships: be it friendship: family members: colleagues I have always worked to understand them. But never have I gave an emphasis on breakups and negatively left relationships. So I need the views of panda community for more understanding. One of my best friends was in a long distance relationship for about six months with a guy she met on the internet. They planned to meet in person so many times but it didn't work out to their favor until he surprised her with a visit about a month ago. On their states of mind she thought they were already in a relationship so meeting in person meant taking it further for her. And for the guy he came in to basically get to know her from scratch and decide weather they can go on with a relationship from then on. The three weeks he was with her half was good times bonding laughing getting to know each other better. When we got t o know about his arrival we hoped for the best and advised her to take it easy. But then at the last week of his trip they started to have disagreements cause he wouldn't reply to her texts or not call or set a meeting if she didn't intestate it. Me being a typical girl advised her to cool down and let him approach if need be but give him space or even not contact him unless he does. My girl being her own unique an free spirited person did the opposite thinking that they should get the best of the time he was with her. And when they said their goodbyes lets just say they were not on good terms. He contacted her twice after he went back. Once to tell her that he arrived well. Second time to tell her that he didn't feel like keeping on with any relationship with her anymore and that was the end of their relationship. He ended it with out even consulting her or chatting with her about it. As broke as she was and with many questions in her mind she decided to not ask why instead just unfollowed him on all social media. I really do not know how to make my friend move on with all the hurt and pain she is feeling.