Annie may have been Annie Mary (Flood) Creech (1869-1901), a Buxton, Maine, native who married William H. Creech (1857-1895). Sadly, neither lived long lives.
By 1910, their two daughters, Eleanor Mae Creech (1887-1959) and Etta Alice Creech (1891-1958), were living in the household of John M. Hatch in Fairfield, Maine. John's wife Emma Augusta (Flood) Hatch was Annie's sister. Etta attended nearby Colby College in Waterville, Maine.
If you have another theory for Annie Creech's identity or if you have information to share on Annie Mary (Flood) Creech and her family, please leave a comment for the benefit of other researchers.