my advise would be to research your aunt, find some record of her last where abouts , then gofrom there , youhave to be sure she really disappeared, her service records? the army must have been looking for her ! the 1950 census? did she ever collect soc. security? think you need to really find out more about her first and prove she really did just disappear.then marraige records........who was her husband? did he remarry, these i think would be records that would give clues .