(a) The court may order an independent evaluation of the proposed patient by a psychiatrist chosen by the proposed patient if the court determines that the evaluation will assist the finder of fact. The psychiatrist may testify on behalf of the proposed patient.
(b) If the court determines that the proposed patient is indigent, the court may authorize reimbursement to the attorney ad litem for court-approved expenses incurred in obtaining expert testimony and may order the proposed patient's county of residence to pay the expenses.