Well,
My wife just got a new bike, and she went on her first club ride last weekend.
All I can say is that she is definately hooked. There were a couple of other girls there, they talked and stuff.
My wife had a tri-bike before, I got her to trade on a good road bike and she really likes this bike. It fits her well, is very comfortable and I would say just as fast.
Prior to the Club ride, it was just me and her. We would got on 20+ mile rides at about 16-18 pace. This club ride was 18-20+ miles per hour and she kept up better than me.
My advice is to find a C-B pace club ride that won't drop riders. The ride that we do stops about every 5-8 miles to regroup. Then they take off. If it was a non-stop ride, would be definately an A pace ride. So that encourages riders to develop good skills, drafting, pacing and passing. Good stuff.
My advice is to find a good group in your area, let her find some other riders and you can both have a good time.
The best thing would be to find a club ride that has all paces, so you could take off for a while and she can stay back and ride with others of her pace, then regroup, chitchat and so forth.
Social rides are great!!