Beacon,
Your comment about support groups is odd to me. The support group we participate in is mostly subjects who are many years post injury. We have some who are twenty to thirty years post injury.
Those close in time to the injury are often too busy to participate in support group. It may be different in your locale. Check with your Brain Injury Association of America affiliate. They often have referrals to support groups. With the population density in your area, I would suspect that you have a number of support groups within your locale.
I am the only PCS participant but my struggles are not a lot different than many of those with more severe injuries except I do not have any of the physical struggles. Most have been in car wrecks or had strokes or other severe injury to their brains. Two were shot in the head. Many were comatose for extended periods.
Check this link
http://www.bianj.org/support-groups
Don't be afraid to just attend and be a fly on the wall. There is lots to learn from just watching. You may need to check a few out to find one that fits your need. Most of the facilitators will be able to tell you about the group.
Post to the new thread I started to see if others chime in.
My best to you.