Sometimes the problem is not the JW/not JW thing but family issues that have never been resolved just ignored in families.
I agree with Blondie. I think that the JW thing masks alot of family dysfunction. I guess mask isn't the right word...postpones is probably a better word. A toxic family member will use the veil of the Org to stab you and to satisfy a deeper agenda that perhaps has been in the undercurrent all along. At least that was my experience. My only sibling, a Sister, is now dead to me because of the cruelty inflicted through the veil of the Org. But it never was really about the Org, only a convenient excuse to disembowel me (she also was very worried about my "spirituality".)
Obviously, only you know the real situation, but I completely understand your frustration. What is quite interesting to me is that your Sister used an identical tactic as my Sister. You mentioned that, even though your Sister was not very helpful through some difficult times, she threw in your face how supportive she had been to you. That is exactly what my situation was (though not with a divorce). My Sister was the very opposite of supportive during my excrutiatingly difficult time, but amazingly, in her mind, she had been completely supportive and I "was biting the hand that was feeding me" by questioning her lack of support! No win situation for sure.
Finally...there is nothing like family to make you feel worthless. They know how to gut punch you, when they want to, quite effectively. It probably will never mean as much coming from people on the internet, but you are valuable, and I really enjoy your thoughts and posts and hope you do not take comments from a toxic Sister to heart, as hard as that may be. Warmest regards (((CB.)))
exjdub