Mo. Rev. Stat. § 473.657: Distribution.

1. Distribution to a distributee may be made to the distributee or to a person holding a power of attorney properly executed by the distributee in accordance with the law of the place of execution, or to the distributee's personal representative, guardian, or conservator.

2. Distribution may be made to the trustees of a trust account established pursuant to sections 402.199 to 402.208 if the court finds that the distributee qualifies as a life beneficiary under subdivision (1) of section 402.200 and that such distribution would be in the best interest of the distributee as prescribed by section 475.093.