Hi Amy, You posted this 9 years ago....I'm thinking you may have this information by now but thought I would confirm it for you anyways.
Yes these 2 women are related, they are sisters.The R. E. is Rhoda W. (1855 AR) and of course there is Julie F. (1862 TX).Rhoda is the oldest of 9 children and Julie is the 5th child born. Their parents are Andrew W. Tibbets (1805 MA) and Elisabeth Jane Unknown (Morton - 1st marriage) (1822 NC). Rhoda and Julie are siblings of my 2nd grt grandfather, Martin Van Buren Tibbets (1841 MO). You said you thought you were related to one of these women, may I ask how are you related (who are your parents/grandparents/grt grandparents)? I'm asking so that I may check if I have you added in the family tree....if not I would like to place you on it. You may email me direct at firstname.lastname@example.org
Hope I have helped or at least verified what you may already have by now.
Hope this helped or confirmed what you already have by now.