Unstopable - I feel your pain. I am in exactly the same situation. My wife and daughter just got back from a weekend long circut assembly. I would say throw her a bone and go to the hall once in a while (maybe once every 2 -3 months) That works for me. I know it SUCKS when they start crying like that, but they really can not help it. It is mind control plain and simple.
If it is any consolation a few years ago I cornered one of my best friends when he was "fading". Literally bible in hand I tried my best to get him back in the org. He did not argue with me but he did not back down either. Time went by (several years) I finally was able to process some of the things I learned. Once I got to a certain point where I was not afraid to look at sites like this then the fade started in earnest.
Love her. Try to understand the psycology of what she is going through. Make sure she understands that you are not abandoning God just the men who claim to represent him.
Good luck.