An independent Greenland does not make sense. A significant amount of the country's GDP comes directly from the Danish state. It simply wouldn't be self-sufficient as an independent nation. The country has enough problems with high rates of depression, social isolation and suicide as is and if the country is poorer and more isolated those problems would probably be even worse. While the high rates of mining deposits just being discovered may lead to independence in the future, I can't see an ATL where it would already be independent in 2019.