There is no guarantee that
1) returning to the meetings will mean the would-be beneficiary would be reinstated, or remain as such.
2) the benefactor will maintain obligations keeping in tact the trust, life insurance, will, etc. that would ensure a distribution.
3) the benefactor won't establish the distribution of the contents of the funds through a trust with conditions requiring continued meeting attendance.
4) the benefactor won't threaten to remove the would-be beneficiary for the next manipulative demand.
Try this. "Give me the money now, and then I'll come back." Beneficiary will be told there is no guarantee that he'll continue with meeting attendance. To this beneficiary could say, there's no guarantee that the will won't be changed either.
It would be unfortunate to compromise or sacrifice ones needs on something that has no guarantees on a future payoff based on someone else's generosity, largesse or flat out manipulation. One ought never be cowed by threats to be removed as an heir or beneficiary, because the source of that money is always someone else's hard work, not the beneficiary's. If it's viewed that way, it might be easier to swallow.
People in general would be a lot happier if they kept their eyes on their own papers and forgot about what they may get the easy way. Living by your own rules is better than anything else. I wouldn't waste my time with this relative, she is cruel, manipulative, and should know better, for "Jehovah knows the true heart condition."
Shoshana