Ok I'm back.

Lesanne: I'm confused about the marriage to Thomas Rudd, how do you think it's connected?
Ammonite & jaywit - so the suggestion being that Sheila's birth date isn't actually her birth date? I don't know what she remembered about her childhood but 4 years seems a pretty big jump... what do you think? Can always order the cert to check!
Lesanne again: with the Bartestree Convent I have noticed that before, had completely forgotten. A big coincidence is that my grandmother's birth mother (who ironically I know more about) came from Ledbury which is not far from that convent. Even though my grandmother was actually born in Wales. I seem to remember reading that Bartestree was a place for 'fallen women'. Again I don't know how to prove or disprove it being my Bridget!
DJ French & jaywit - you're right im sure there has to be a connection. There is a death reg in 1960 for a Hermione Blackwood though? Bridget had told people that she was awarded medals for her work as a nurse.
Ebch: Where did you get that info from? It may be worth looking into!
I'm very haphazard in my research so I'm sorry if this is confusing to people!