I assume this is dads grandma Mary Clay Morris from Texas. I’m not sure who aunt Nammie (?) is though. Also I’m not sure who is who in the picture…

It is Mamie Mae born in 1897 and was a step daughter to Mary Clay. Addie A, Mamie’s mother, passed away in 1901 the year after the 1900 census record above. Note Mary Clay born sept 20 1884 is only 13 years older then Mamie