Nancy Jean Sadler;the three year old daughter of Richard W.and Flora Sadler;of Charleroi;died suddenly  Friday night;April 9;1948;at 11:20 p.m.at her home;933 Oakland avenue;Charleroi after a short illness.  She was born in North Charleroi;June 18;1944.    Surviving are her parents;her maternal grandparents;Mr.and Mrs. Micheaus;of Charleroi;and her paternal grandmother;Mrs.Margaret Sadler;of McKeesport.  Mrs.Ray Pierotti;of Charleroi;is an aunt.   Friends will be received at the Lawrence B.frye Funeral home.  Services will be held there Monday;April 12;1948;at 2 p.m.;in charge of Rev.G.H.Guisler.  Interment will follow in Elizabeth Cemetery.  Lawrence F.Frye is the funeral director. (She was moved to Belle Vernon Cemetery on September 18;1973).