Ethelyn (33) and Evelyn Moore (48), twin sisters of father Andrew Washington Moore, grandfather Abraham Thomas Moore.
Abraham is brother to Polly Ann (Moore) Small, mother of Will T. Small who is the father to (Evelyn) Elaine Small (44).

The common denomenator are the great grandparents (that is, parents to Abraham and Polly Ann),
which makes Elaine Small a second cousin to Ethelyn and Evelyn Moore.