Oh, boy, well, girl, actually, one of my niblings has had a baby so suddenly every moves one up on the kinship structure - I'm a great-aunt, my sister is a grandmother, our mom's a great-grandmother, all the kids' generations are called uncles and aunts (as we do kinship) except the 2 who are parents, and there are a new (actual, not courtesy) aunt and uncle). Yay, happy new baby to all!

I am bouleversée, actually, as being in the grandparental generation is odder than I expected...

Speaking of kinship terms, as I was, does anybody have a term for 2 women who are each mother-in-law of thalf a couple?   The two who will fight over the grandchildren? Or for parents en général who share married children