Goodness -- quelle coincidence! and what a generous offer.
Emma Hill appears in both the 1851 and 1861 censuses in England, as follows:
1851: in Linkinhorne, as Mary Emma Hill, age 8, with the place of birth transcribed (at Ancestry) as "Jersey, Cornwall, England". On the original document, the "ditto" for Cornwall has clearly been scratched out.
1861: in St Andrew, Devon, as Emma Hill, age 18, born in Jersey.
I've searched the jerseymaid site with the 1841 Channel Islands census on line, for Sarah Bond/Hill and Francis Hill, with no luck.