She basically gets upset dragging the kids by herself because she doesn't really want to go either.
She really hates answering for me too. "Where's your husband?" "Is he sick?" "Why haven't we seen him?"
I feel really bad for her but... watcha gonna do?
I can relate to this feeling. I was that wife for a little while. My husband Little Drummer Boy stopped going to meetings probably about a year before I did, and before that, he was REALLY inactive. I felt like I was just as tired, sick, unmotivated, busy, or whatever other excuse he had to miss meetings. But I dragged my butt and my son's butt in there as often as I could, because I thought I would be pleasing "Jehovah".
I got really sick of the "Where's your husband? How's your husband? Tell him we miss him" comments. So I finally started doing as OnTheWayOut suggested. I would answer by saying, "You know, I'm sure he'd appreciate hearing that from you personally. Why don't you call him?"
That shut them up. And, by the way, they never did call him to say they missed him whenever I suggested it.
You should just explain to your wife that if you miss the meetings, it's not on her to make excuses for you. Tell her that it's your "fault" for missing, so if people want to ask, they should call you. Put the responsibility back on yourself to 'explain' yourself. Then (little white lie) tell her that you're proud of her or admire her for going even when you don't. Just your acknowlegement of the situation will help calm her.