I haven't read your other posts so I don't know the background here, but I didn't get that she is trying to manipulate you when she shared with you that her son is doing better and missing his son. What else would/should she say if indeed he is working on recovery and does miss his child? And what else would you have to talk about other than her son/your AH. Maybe, sometimes conversation is just sharing information?
Having said that, it does sound to me like it might be too early to break NC.