In some countries the state will not allow this and the will can be challenged. The best thing to do is to consult an attorney / solicitor.
OR, you could respect the wishes of the parent, and do nothing.
The non-custodial parent can file for custody.
kill the child
leaves
yes
It depends on the exact language in the custody decree, but ordinarily a custodial parent is allowed to place a minor child in the temporary care of any responsible adult.
yes
With the permission of the residential parent? Yes. see related question.
Maybe.
not if you have consent from the legal parent.
generation
for or against?
Because of the parent trees