I'm hoping someone can help me officially determine what happened to a couple of people. I am looking for Mildred "Goldie" Silverthorn and her daughter Helen Silverthorn. Mildred was the daughter of Gaylord Plato and Mary Jane Jarvis. She married Roy Silverthorn in 1924. They appear in the 1930 census in Flint, Michigan. Helen also appears in this census with an approximate birth date of 1926. Mildred also appears in the 1934 Flint City Directory with Roy.

I haven't been able to find anything more about either Mildred or Helen.
Does anyone know what happened to these two? Thanks.