Indiana Code Title 29. Probate § 29-1-19-14

Sec. 14. (a) A guardian shall not apply any portion of the income or the estate for the support or maintenance of any person other than the protected person, the spouse, and the children under the age of eighteen (18) years of the protected person, except upon petition to and prior order of the court after a hearing.  A signed duplicate or certified copy of the petition shall be furnished the proper office of the Department and notice of hearing shall be given the office as provided in the case of hearing on a guardian's account or other pleading.

(b) If the protected person is a child under the age of eighteen (18) years, and the parents or those standing in loco parentis are able to care for, maintain, and educate the protected person, neither the income nor the principal shall be expended for any purpose except as ordered by the court.