I would bet the bottom picture is mother and daughter...over many years, I've been fortunate enough to have had more than a few encounters with women who were related to each other....sisters, cousins, grandmothers and daughters and grand daughters...alone...and some times a LOT of fun with one woman who've I've been with sets up another get together and has their relative along....one of my very first sexual encounters was with an older woman....she told her sister in law...later the sister in law seduced me...then after that I did both of them together several times...