need information on Sister

I haven't seen my sister for 24 years. She has been in the family for 30. Her bible name was Endureth and her husbands was Silas. Real names are Sandy and Rick. They are in leadership position. I have only been in contact through email for about 2 years. They are talking about coming for a visit. They will need money. I would love to talk to someone who might have known them or has some information that would be of interest to me. They are in Thailand now and have been for at least three years. Two children, named Renee and Daniela, they have children of their own now. If anyone can help me please let me know.