A representative is entitled to reasonable compensation for his services, but no fees, charges or other compensation may be allowed a public administrator for services performed in administering that part of the estate of any United States war veteran which consists of compensation, insurance or other monies due or payable from the United States because of the veteran’s war service. No fees, charges or other compensation may be allowed an employee of the Department of Human Services or the Department of Children and Family Services designated under paragraph (b) of Section 11-3 for services as guardian of the estate of a patient or resident in a State mental health or developmental disabilities facility or other State institution. Fees awarded under this Section shall be considered as a first-class claim for administrative expenses and paid from the guardianship estate or from the probate estate pursuant to Section 18-10. Fees awarded to guardians shall be consistent with Section 11a-13.5.