Younger parent here
I'm only 46, so my 13/9 YO kids are still cute, and are still under illusion that I'm very smart and they take my advice, we all get along, etc. Eventually I'm sure they'll figure out I'm not all that
Point being - I'm not even close to that stage as a parent so I don't know what it feels like, what the dynamics are - but I'll still put in my opinion.
*This assumes that the article - the Mom - is telling the truth and whole truth. I find in these situations - only the participants have the whole truth*
If this were one of my kids, and I feel I did right by them, raised them, gave them educations, and gave them more than a 'fair shake' at a successful/happy life......here's what I'd do:
1.)Divvy up MOST of the rogue-daughter's share of inheritance amongst the other kids, or other people or even causes I cared for.
2,)I don't know if such a mechanism exists....
But I'd take around 100,000, (inflation adjusted) future dollars and put it in a rather strict trust.....where the adult child *has* to prove that she is truly in danger of not having basic food, shelter, or non-elective health care.
I think I'd be upset- to the point where I don't want to fund luxuries and vanities.....but it's still my kid, so I probably would like to make sure she at least has a sandwich and a roof.
And I'd look at DW like I do sometimes today, half-kidding but with a loving smile.....and say "yeah, 2 kids being brought into today's world is great, you were right. And it's so much better than just you and me taking vacations at will like we used to. This is more fulfilling"