You could be in serious trouble if you harbor a runaway. If your niece ran away because of a dangerous situation, then call the police and report her presence as well as the situation. She should not be return to that situation but the state needs to know where she is. Perhaps you could seek her guardianship. "No active parents" is a vague term. Have the parents' rights been terminated? Many facts are missing. A critical fact is the reason your niece is a ward of the state.
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Author's response, as stated above, should not be considered legal advice.
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