I have been banging my head on this profile for a while now.
Sarah seems to be Arthur C Garner's second wife. She appears on the 1881 Census as his wife but I cannot seem to find a marriage record....if they indeed were married.
She had 3 children, two of which have the surname Garner, both of these show the mothers maiden name as Nelson.
Her daughter Susan does not appear as far as I can see as a Garner, however, I seem to have found a GRO birth reference for a Susan Nelson who's mother is Sarah Nelson.
The dates are in the right area, I'm wondering if Susan was born our of wedlock, or that her mother was widowed.
Arthurs wife seems to have died in childbirth, so I'm wondering if they married or lived together afterwards.
I hope someone can shed some light on this