What would you do if you were Marta? Keep all? Keep some? There's basically three assets:
-$60 million cash
-The house
-Thromby's body of work
I think I'd keep the cash and the house but give the family the body of work to get them off my back. The house and the cash are enough of a windfall for anyone. Let the family learn to get along to milk what they can from Thromby's body of work.
Offer the family an opportunity to buy the body of work for a reasonable price, sell the creepy damn house, keep the cash and whatever I could get for the sale of Thromby's work. Because even if I liked the man, I'd hate to be stuck with the responsibility for managing his literary legacy and publishing, a field I know no more about than Marta, and that would probably be what the family would want most. Let them buy the rights for millions, let them claim part of their birthrights, and make more millions by selling the movie rights or whatever, then everybody's as happy as they're going to be!
I might go back to the family's country of origin for a while, to straighten out the mother's immigration status, and to think about where I wanted to settle down after I'd sold the creepy house ripped off from "Sleuth".
Hate to be "that guy" but if we WERE Marta, we'd do what Marta would do.
Legit, if we were Marta, we'd have only won Harlan's trust by being literally trust-worthy.
That means doing what Harlan would've wanted, starting with protecting the body of work from the exploitation that his son kept pushing.
No one in the family cared about the house; it was a relatively new acquisition.
But she could probably keep them off her back by paying them some of the $60million.
I would NOT want to live in that house, I'd want to live in some nice place I could make my very own, where my family would be happy.
So I would get a lawyer who could negotiate with the family, and give them the chance to buy the house and its contents and the rights to Thromby's work. No, none of them have the capital, but I'm sure they could get loans. I wouldn't want the house or the responsibility for managing Thromby's work, and I also wouldn't see cutting them off as a sacred trust. I'd see if we could make a deal that ended with them in control of the family legacy, and me independently wealthy.