Hi Brenda, I found your Family Tree on Ancestry. It's VERY helpful for a volunteer if you include the URL to your family tree when you post your message.
Do you have a copy of Caroline Winchester Martin's obituary? Since she died in 1910, Laura and Fannie might be listed in the obituary.
You mentioned that Laura Buckley Bailey was a daughter of William A. Bailey. Do you mean wife? Wasn't her maiden name Martin?
Do you have a copy of Mary Martin Godbey's obituary? Laura and Fannie might be mentioned in it which would provide a good clue. With today's databases, the more closely a person searches to where they were living, the more information will come up.
I did find where Mary J. Godbey was living in 1900 and 1910 and neither sister was living with her.