Mo. Rev. Stat. § 456.2-201: Role of court in administration of trust.

1. The court may intervene in the administration of a trust to the extent its jurisdiction is invoked by an interested person or as provided by law.

2. A trust is not subject to continuing judicial supervision unless ordered by the court.

3. A judicial proceeding involving a trust may relate to any matter involving the trust's administration, including a request for instructions and an action to declare rights.