Kate Sarah B. Feuester married in 1891 in Winchester district (freebmd - indexing is wrong, it's actually 2c not 5c and Winchester not Wincanton - she married either Edward Clark or William Thomas Thorne)
Also there's a William Feuester who married in 1867 (Winchester district)- possible remarriage of her father? One of the possible spouses is Charlotte Barter - did Catherine have a sister? Or maybe a widowed sister-in-law?
1871 census:
RG 10/1210 36/12
St. Thomas, Winchester, Hampshire
William Feuester (looks a little like Fenester), 34, lath render, b. Bristol Redcliff
Charlotte, wife, 40, Ladies Outfitter, b. Basingstoke Hants
Kate, dau, 5, b. Marylebone
They are indexed as Fenester on the 1881 census as well - still in Winchester, Kate is with them.
There is a death in Winchester in 1868 of an Emily "Fenester" aged 8, possibly a sister.
1861 census, RG9/1726 100/8
Avon Cresent, Bristol
William Fenester, head, 24, Lath Render, b. Bristol
Catherine, wife, 25, b. Hants Baskingstoke
Emily, dau, 1, b. Stap??