I just did a little snooping around. She died in September, according to the public page of My Life she had a net worth of $50,000 to $100,000. Her listed income was $10,000/year. My guess is that's Social Security. A revocable trust means she retained control of the funds until she died, now the money is being disbursed according to the terms of the trust. If the language about moving, DFing etc not effecting entitlement to the funds is in the trust document, she made it clear she wants the money to go to the individuals, NOT the WTBS.
I'm sure the Society will put pressure on recipients to pass along the money. I hope somebody has the backbone to tell them to go pound sand, there isn't a thing they can do about it legally.