Even if they did have husbands and children, it should be noted that they were crystalised for roughly 500 years or so. That would make them not grandparents, but great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great, great grandparents.
That is what I am saying.
I started saying they were grandmothers but changed my mind.
I can´t change the title of this thread though.
The important is that they are ancestors.

Long time span just strenghten this theory.

Their husbands got to Cocoon before Ragnarok.
The purge was unecessary by then.

If you read the official short stories you will find no mention of any husbands or children. Given that it goes through what they think about, this would be one of their initial concerns as mothers and wives, but they do not even think about it once.
Maybe not since so much time have passed and surnames changed and they figured it.It would be like finding a needle on a cornfield.
They will never find their husbands and sons since they were dead by now.
They have a better issue to worry about.Their focus.