Hi, you could direct the couple to check out
Petfinder.com: Adopt a pet and help an animal shelter rescue a puppy or kitten. as well as Yorkie rescues in that area and another good spot is
puppymillrescue Home Page. At their age they would be better to get an older dog (senior). I know my parents were this age when they lost their Collie. My brother and I went to a Collie rescue and found them Mr. Mcduff who at the time was 8 yrs. old and beautiful but no one would look at him due to his age. The poor guy had lived his whole life with a family then dumped at a pound at only 45 lbs. He was very regal and he was so appreciative that he had a good home. When my mom became very ill he stayed at her side 24 hours a day. When she went into the hospital for a few months he would cry by her bed waiting for her. When she came home she was in hospice and Mr. Mcduff again never left her. They had him about four years before he passed. I think part of it was a broken heart with my mom always in the hospital, but never the less he needed her and she needed him. Rescuing an older one is so rewarding and I think that would be perfect for this couple. There are plenty of older Yorkies in resue as well as on petfinder. I hope it works out for them
Elaine