Ooh good that it says Dorset:)
A couple of Census that might be her Parents;
1851 Census
Broadwinsor, Dorset
Mary Ray 60 Head Widow Pauper/Errand Woman born Knyton, Somerset
Martha Ray 18 Daug Unm Laundress born Bradwall, Dorset
Mary Ray 6 Grand daughter
Martha bapt May 1833 Broadwindsor, Dorset to JOHN/MARY
1841 Census
Marshwood, Dorset
John Roy 45 Ag Lab
Mary Roy 49 NOT born in County
William Roy 25 NOT born in County
John Roy 23
ROBERT Roy 15***
Ann Roy 10
Elizabeth Roy 9
Martha Roy 7
All others born in County**
Lots of Bapt for children above on F/S under Rea/Ray/Wray etc
William in 1851;
William Ray 28 born Thorncombe, Dorset*
Fanny Ray 23
Jane Ray 4
Robert Ray 2
Rhoda Ray 6 mths
1861 he is William REY born 1815 Crewkerne, Somerset, 1871 1813 Crewkerne
1881 c 1811 Broadwinsor, Dorset
FreeREG Bapt;
03 Jul 1814, St Bartholomew, Crewkerne, Sonerset
William REAY to JOHN/MARY
Father a Labourer