Sarah was born at Newsome in 1821, but not baptised till 1825.
In 1851, Sarah Boothroyd is described as dau-in-law and unmarried, aged 30 with the Jushua Armitage family. A Hand Loom Weaver. She has a daughter Eliza aged 5. They are at house 466, Almondbury. Eliza's baptism of 21 Sep 1845 shows Sarah was a spinster from Almondbury.
However, also in 1851 there is Sarah Smith wife of Joseph of Honley, a butcher. This Sarah is born at Newsome and has her sister Susannah Boothroyd with her from Netherton. This is a perfect match!