Who is Mrs. Rachael Agajanian from The Risk Pool and what is their importance?

Mrs. Agajanian is the next door neighbor of the Claudes. She witnesses Claude Jr.'s suicide attempt. She is all alone in the world, living in the home where she grew up. Mrs. Agajanian is not quite right mentally, and her doctor visits her regularly to give her prescriptions for her "spells." The tells Ned and Claude that she has a no-good husband named Byron who she found out was a homosexual right before he died; and she has a son named Ralph. None of this is true. She is very thin and small, and her white hair, held down here and there with black bobby pins, makes a wild halo around her. Mrs. Agajanian eventually moves into a nursing home and dies in a freak accident on the merry-go-round when a group of senior citizens go to the Mohawk Fair.