I've found a Bridget Connor who died in 1903, aged 37. She is possibly Sarah's mother. Bridget is recorded on her death certificate as being from tipper (which I think is a townland in Longford). . I am guessing her year of birth is around 1866. I found several Bridget Connors born in 1866,. Though I don't know any way to narrow them down.
(I have a DNA match up to one of the descendants of Sarah and we are trying to work out the connection. I've been going through the various names to see if any match up with any of my ancestors - Keatings, Lyons, )