No, however you he can file an injunction to stop the move.
Yes; he can.
No, you slowly make it harder, i.e. first use half, if father continues declining, file full custody
File a motion for full guardianship of a child in need of care.
Well you can but the court will not find that a good reason to take custody away from her.
You file a motion with the court.
Generally, custody orders end at age eighteen and the child can choose where she wants to live.
Any interested party can file for custody of a child. Whether or not their petition would be heard, require legal establishment of paternity or thrown out depends on the law where the child legally resides
You file for it in the jurisdiction where the child legally resides.
Yes she can.
If she left the state, file an injunction to return the child. Other than that, you will need to prep for a custody challenge. See links