Ok, thanks. Sorry for all of the questions but on the onset reading your question I was puzzled as to why the 23 year old daughter taught she had the right to take the younger siblings away from the biological parents. She has no standing and she is in no position to provide for them, so even if she was silly enough to go to court to try to file a petition for guardianship, it is unlikely she would succeed. The parents are moving to provide a better life for the children and no one has a right to the children superior to the parents. If this were a parent versus parent situation, the answer would be different but since it is a 23 year old daughter with no resources and can hardly care for herself, she does not stand a very good chance of winning.
The parents are under no obligation to negotiate with her. So the best way to deal with this is to assert their rights as parents, they get to decide what is best for their children and the court will look at the best interests of the children as well. My only concern is that the younger siblings are teenagers and I would hate to see a scenario where they run away from from because they do not want to move, but that has nothing to do with whether the 23 year old daughter is entitled to guardianship and I can only hope the parents can reason with the 3 younger siblings that the move is best for the entire family and will allow them a better life.
Unless the 23 year old files a petition with the court and the court issues an order to prevent the parents to remove the children from the state, the parents are free to move and have no obligation to give the 23 year old any rights. I hope this helps clarify.
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