The young girls look to be about 6 and 8 years old. If their parents died in 1880, does that tally with years of birth around 1872 and 1874? Were they the only two children this couple had?
The older lady could be a grandmother .... possibly in her 60s, so born around 1812, give or take. Can you identify her? Does she have her legs crossed?
Like Carol, I think it has a “mourning” feel to it, especially considering the way the older woman is holding the young girl’s hand. They look suitably sad.
It’s a lovely photo.
