Mr Flipper, that's terrible! What kind of religion presumes to come between a parent and children.
But as a form of coercion, I doubt its long term success. Parents have threatened kids with "conform or lose out financially - free board, will etc" since forever and it's never been a good strategy; they lose the best ones who can make it on their own.
The shunning is a far worse step; that the jws are never allowed to mend the bridges.
Also just noticed the pic you pointed out of the babies "all born sinners" - wierd! Is that more of the "don't trust your heart, just follow whatever we say" stuff?
I just devoutly hope that any lurkers reading will find it in their hearts not to shun anyone and most especially not their own family. And also that your daughter keeps in touch.
Retro