Likely the second ‘wife’ to Francis Binning though no evidence found of any actual marriage.
Although not married to Francis, she bore him several children. For instance, check the birth certificate of Alice Binning (Kitty's mother and my grandmother).
And three years later you can see Amelia is once again shown to be the mother of the next child, Ernest Binning, yet no father is shown on his birth certificate
Amelia is shown as a visitor to 132 Theobalds Road in the 1891 Census below, aged 37, just before her death.