Is this a photo of Letitia McKee and her five daughters?

The tall lady in the back is my Great Grandmother Roxanna McKee. I am trying to determine if this is a photo of Letitia McKee (1814-1897) in dark dress, surrounded by her five daughters: Roxanna, Jane Helen, Caroline, Adela and Olive. They are wearing sashes to show support of the Union Army. They would go to the local church and bake bread for the soldiers.