Just arrange a weekend away at a romantic B&B, or a sunday of brunch and markets and tell her it's important to strengthen yourselves as a couple first before attending another meeting. The prospect of not going has to become more appealing than going, so if she can compare how she feels after a relaxing sunday of sleeping in, then brunch and a stroll around town or the beach OR a sunday of white knuckling it at a meeting filled with guilt, fear, obligaion, and orwellian mind control propoganda techniques.