"How a mental health professional can make the process easier on the client, tell me a little bit about how you work with them?"
Seeing a mental health professional can't hurt. The most important thing in a divorce is the emotional damage that it does to each of the spouses and to the whole family. A mental health professional can only help; they can keep you focused on what the goal is, on what is important. They can help you eliminate the background chatter and eliminate the patterns that developed during the relationship.
They can also help you keep up your self-esteem. When you're going through a divorce you're at a very low point in your life, whether it's your fault or the other person's fault isn't important; it's a sense of failure. What you need is to have your self-esteem increased; to have somebody keep reminding you that it's not your fault, or that it's not only your fault, can only help.
Hiring a mental health professional can also make your divorce less expensive. Spending time with them going through so many of these emotional issues stops you from calling your divorce lawyer, who probably charges a lot more, and going through the same emotional issues all the time. Having a mental health professional in your corner can only help you through this process.