It's an assumption, there are only 6 daughters, you assume something not mentioned at all. Why do people here always assume the worst? The eldest is in college. The other girl holding the baby could be a family friend or relative. It might be an all girl photo, for family history. I have 3 daughters, and we've done family photos with just the female side of the relations.
MARINE CORPS BASE CAMP LEJEUNE, N.C. (Feb. 1, 2006) -- Master Gunnery Sgt. Kimberly D. Walker, G-3 embarking chief, 2nd Marine Logistics Group, stands with her daughters and her niece after her current rank promotion Feb. 1. Her promotion to master gunnery sergeant made her the first of her rank in her military occupational specialty.
I'm just guessing dad is deceased but this is FR and a black woman with six kids has to be a welfare case EVEN if she achieves greatness in the Marine Corps.