In addition to the remedy specified in sub. (2), upon failure of a grandparent to provide maintenance under sub. (1) (a) 2., another grandparent who is or may be required to provide maintenance under sub. (1) (a) 2., a child of a dependent minor or the child’s parent may apply to the circuit court for the county in which the child resides for an order to compel the provision of maintenance. A county department under s. 46.215, 46.22, or 46.23, a county child support agency under s. 59.53 (5), or the department of children and families may initiate an action to obtain maintenance of the child by the child’s grandparent under sub. (1) (a) 2., regardless of whether the child receives public assistance.