You are actually requesting a "forum" rather than a "thread". We once had a Single Moms forum which was combined into the current Special Concerns forum. It was a good forum and had a lot to offer. Unfortunately, it had very low traffic, which is why it was combined with others.
I am trying to come up with a way that we can support additional forums. At the moment, we get a lot of complaints that there are too many forums. Once we can organize things better, I am happy to revisit the idea of a forum for Separation and Divorce or Single Moms. One thing that I think kept traffic down was that single moms are simply too busy for DCUM. But, maybe now that DCUM has grown, there were be enough participants in the forum to keep traffic up.