Remember that results of studies are always averages, and do not capture the experiences of everyone.
My conclusions should be considered suggestive rather than definitive.
You can expect a facilitator to lead the group, whether that person is a fellow divorcee who pulled the group together or a mental health provider who offers the support group as a professional service.
The facilitator may suggest topics to discuss or may simply allow the conversations to flow according to what the participants want to say.
One of the hardest things to deal with for women divorcing is the loneliness that can accompany the process.