You're very welcome - it was an interesting one to try and unravel. :-)
I'm still erring on the side of your Sarah Ann being the one in the 1871 census entry I mentioned, simply because this one was born in Ashton in approx. 1864, and I think the one you refer to was born in Stalybridge in approx. 1858? Anyway, as you say, a bit more research should sort it out. Good luck!