I notice that Ellen is recorded as Hudson on 1891/1901 census. I think you will find that she is with John & Mary on both censuses. Age 4 & 14 born Gateley, Norfolk.
Therefore Ellen Hudson 01/1887 Mitford Norfolk
Married as Hutson Q2/1905 Norwich to Charles Bowthorpe?
The 1911 census shows Mary Ann Hutson with her
Colin