Kaik I know you're mum is a believer, so working with that perhaps just stress to her that as a forgiving god maybe jah tolerates real ass*@£es in the congregation and that this is certainly not from god but that he is a (very) bad apple that has not been dealt with yet. When they ask for money tell them to " WAIT ON JEHOVAH!!!!"
Swine's, bullying a sick old women. You have my sympathy Kaik.