Trusts can sometimes take time to settle.  Sometimes they end on their own as indicated in the trust and sometimes assets take a while to deal with.  But Arizona does have a statute that allows you as beneficiary to challenge the Trustee and force distribution.  I would start by seeking legal help in writing the basic letter on your behalf requesting status.  ALso a trustee has to file an accounting every year so you should be able to tell what has been going on.  You can also ask the attorney you confide in if the actions of the trustee would give rise to a breach and disciplinary action.  Good luck.