The right of election of the surviving spouse may be exercised only during the surviving spouse’s lifetime. In the case of a protected person, the right of election may be exercised only by order of the court in which protective proceedings as to the protected person’s property are pending, after finding (1) that exercise is necessary to provide adequate support for the protected person during the protected person’s probable life expectancy and (2) that the election will be consistent with the best interests of the natural bounty of the protected person’s affection.