I found Estelle Fratus Dennis obit in "The Detroit Free Press", Sunday, March 10, 1940, part one, page 9, column 5. She had lived in Detroit for 2 years and lived at 60 Winder St. She had a night club act with her husband, Carl L Dennis. Her mother, Anzina Fratus and brother, Arthur Fratus also survived her. Both living in Sydney, Australia. Funeral home was A J McInnes, 15941 Woodard. Services at St. Patrick's Church. Burial in Mt. Olivet Cemetery. The cemetery has a search engine and Estelle is listed. Gravestone can be seen at www.findagrave.com
Carl was listed in 1941 Detroit City Directory as living at 56 Winder and occupation was actor. No listings for 1938 or 1939.
I found several newspaper articles on Estelle Fratus at www.fultonhistory.com
which has many NY historical newspapers and it is free.
Contact me and I will email you a copy of Estelle's obituary. I had looked it up for another person requesting her obituary.