Hi Dave,
I have been looking at this for hours with no going forward.
I guess you may have Jane's sister's marriage.../.can't believe that her and her mother have put born Birmingham in the later census.

There is a person with these people in his tree and he has a death of Mary Ann in Droitwich at 1907 but no other detail ...so i,m not sure on this, I have asked him if he has any other detail.
Will let you know if I have any luck with this. And will have another look at the census.
Alison