Where would you put the blame?

I belong to a group online of people who have estranged themselves from their families, and this issue recently came up for someone.

The wealthy parent is on their deathbed, and has so stipulated in their will that none of the children will benefit unless the one estranged child come visit. That person has been estranged from the parent and siblings for a decade, and a reconnection would cause emotional pain.
The sibs have started to harass the estranged one, as time is running out.

The person in question has absolutely refused to go. Blame has been liberally bandied about.

Curious as to how the people here stand on this.