Glanfield/Widdicombe

I am searching for any information on Renee Winifred Glanfield born c 1875 USA to a George Glanfield who was born in South Tawton,Devon and a Marguerite (French -Swiss nationality). Renee married William Henry Widdicombe in 1898 Plymouth, Devon. They has 2 children William George G born 1902 and Winifred Marguerite  born 1904 both born Plymouth,Devon. I can find Renee in the 1911 census living in Plymouth. Family story has it that when her children were young she just left them and her husband and vanished.I have drawn a complete blank with no record of any other marriage or a death.Also I have been unable to find any records of her birth or passage to the UK which the latter would have been around 1875-1878. Is there anyone who is able to help?