Wash. Rev. Code § 13.36.070
(3) The court may terminate a guardianship on the agreement of the guardian, the child, if the child is age twelve years or older, and a parent seeking to regain custody of the child if the court finds by a preponderance of the evidence and on the basis of facts that have arisen since the guardianship was established that:
(4) Upon the entry of an order terminating a guardianship, the court shall enter an order:
[ 2010 c 272 s 7.]