WrongPlanet can sometimes work quite well if you don't particularly need a trained counsellor for a particular question or problem. There's the General Autism Discussion section you're on now, which also has the AS-NT Hotline thread as a "sticky" near the top of the main page, and the In-Depth Adult Life Discussion section can be quite good.
There was a face-to-face support group offered to me a few years ago in the UK, but I didn't take it up because of the likely strain an entire real-life social group would have on me, because I have social anxiety because of Aspergers. But I've been comfortable with real-life personal counselling when it's been just me, a partner and a counsellor, once I've got used to the counsellor. Just thinking that your wife might also have social anxiety like mine, though not everybody does.