18 to leave parents. Whether they are your adoptive parents or not. You also can check yourself out of a mental health facility at 18. If not 18 have to waiting out. If at least 16 can hire attorney and emancipate yourself from your parents it's costly so I hope you have help financially or you can try legal aid they have family law at Cobb county legal aid.
Sorry to leave the adopted family and come home to her biological parents
How old do you have to be for what? To do what? Your question isn't clear enough to answer.
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