(a) If it is in the best interest of the ward or his or her estate, the court may order the guardian of the estate to retain any property belonging to the ward which may come into the hands of the guardian otherwise than by purchase by the guardian, whether or not the property is of the nature authorized by § 28-65-311, as an investment of the ward's funds.
(b) If the guardian of the estate makes an investment which at the time of the making thereof shall meet the requirements of § 28-65-311 and the investment later fails to meet the requirements, the guardian may retain the investment, unless otherwise directed by the court.