Great advice, everyone! I was thinking, I would like to shoot my sons' (whenever that happens) weddings but really will probably hire a pro. My brother is a retired pro, so I may hand him my Canon stuff and let him do some of it. He shoots with Leica film. Mother or father of the B&G should never do anything else but enjoy the event they paid for.
Now, if you are compulsive, like me, you may bring your camera bag along anyway, but limiting herself to the before wedding get togethers may be a good compromise. The only real problem is "If she is taking the pictures, she's not in any of them." My sons' reasons for not having me shoot our family events.