Looks as if Frances and Alice were the unmarried Sophia's daughters, so a strong possibility that Ellen was too?
Marriage registration Sep 1861 Colchester 4a 369
NORDEN John RAMPLIN Sophia
1871 census RG10 Piece 562 Folio 37 Page 26
2 Bow Common Lane, Mile End Old Town, London
NORDEN
John head m 40 Carman Essex Colchester
Sophia wife m 33 Essex Stanway
Frances dau 17 Fur Sewer " "
Alice " 11 Scholar " "
Barbara