A child charged with a delinquent act need not be a witness against, nor otherwise incriminate, himself or herself. Any extrajudicial statement, if constitutionally inadmissible in a criminal proceeding, shall not be used against the child. Evidence illegally seized or obtained shall not be used over objection to establish the charge against the child. A confession out of court is insufficient to support an adjudication of delinquency unless corroborated in whole or in part by other substantial evidence.
33 V.S.A. § 5228