Probate Code § 19320
CHAPTER 10. Allocation of Debts Between Trust and Surviving Spouse
If it appears that a debt of the deceased settlor has been paid or is payable in whole or in part from property in the deceased settlor’s trust, then the trustee, the surviving spouse, the personal representative, if any, of a deceased settlor’s probate estate, or a beneficiary may petition for an order to allocate the debt.