I just bumped into an old school friend. I've seen her maybe a handful of time in 35 years. Last I heard she'd married young and had three children who would all be adults now, the oldest must be at least 30.
Anyway she was picking up a child of about 5/6 from school. Oh, says I, grandchildren? You guessed, no it's her daughter.
I'm now wondering if perhaps it wasn't her, but her younger (by 10 years) sister...