Hi Carole
Thank you very much for doing this look up for me.
Fortunately, I have since managed to find her on the 1851, indexed as Theresa MARIN in Hastings. The index also states born BuckHill but the image does say Bushey Heath.
I found her by pure chance, so it would seem you can't always rely on index transcription. !!!
Again, many thanks for your time.
Regards
Maddie