My best friend needs to exit her marriage - her DH is addicted to alcohol and can't hold down a job. His behaviour towards her is awful and she has finally, after years of trying, decided to end it. She is the main breadwinner and looks after the 2 kids who are 16 and 18. They share a house at the moment. She is going to see a lawyer next week but I have read online that you have to be separated for 4 years before you can get a divorce. How does that work then? Anyone got any useful advice/experience?