Someone will correct me if I am wrong..
But your only course of action is for the bio dad to start proceding for a change of custody. A 12 year can not start legal action against her mother to change her place of residence against a current court order. During the custody proceding she may be allow to speak to the judge and state her opinion.. but, judges are aware that 12 year old children sometimes get upset and it can be hard for the custodial parent.
Bottom line... bio dad need to file for a custody change.
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SMILE - Start Making It Livable for Everyone
Divorce is a process over which children have no control. Children should not be its victims.
When parents are under stress, it is harder to be in touch with their children's pain and anguish.
It takes time, effort, and planning on the part of the parents to be able to provide for the children's needs.
In the crisis of divorce, parents may put their children on hold while they attend to adult problems first.
Sometimes separating/divorced parents find that their roles and expectations are undefined and cloudy.
If handled properly, divorce need not be devastating for children.
[This message has been edited by usdeeper (edited July 26, 2000).]