Sarah is not mentioned in her fathers will so may have emigrated.
Sarah Hopley, 24, daugter of William Hopley married George Dunning (a Clerk, son of a publican) in Birkenhead 16 Jan 1860. In 1861 she had a 4mo old daughter, Lucy.
The 1861 census confirms Sarah is from Shocklach George died in 1866 and Sarah married Hugh Kerr in 1868. She is still in Chester in 1871 and then there are no more records.
Lucy was born in December 1860 in Chester and her baptism took place there on December 16th, 1860.34
Birth Notes
4 Months on 1861 census
Name: Lucy Dunning Date of Registration: Oct-Nov-Dec 1860 Registration district: Great Boughton Inferred County: Cheshire Volume: 8a Page: 307
Name: Lucy Dunning Gender: Female Baptism Date: 16 Dec 1860 Baptism Place: St Johns, Chester, Cheshire, England Father: George Dunning Mother: Sarah FHL Film Number: 2045922