Caroline does not appear to be on the 1841 census in any way that I can find, nor can I find a Joseph Shepherd who could be clearly identified as her father.
Since she would have been born about 1816-1821 she could only be located from Parish Records.
The only Caroline in the census of the right age and approximate location is at Crewkerne, age 25 in 1841 but with a father Henry, an agricultural labourer.