Yes, but their mum is nothing to do with the family anymore, so you're saying that it's the ex-husband fault they broke up . . . . maybe if it was the other way round then, and she was related to our family but the husband wasn't, he wouldn't still get invited to weddings etc.
The kids are prudie, but like i've been saying, the mum is now nothing to do with us (legally) and the only bllod connection is through the two children she gave birth to.