"Need help filing Living Trust. Received 1099-Int"
I am sorry for your loss but, at this point, the trust is a separate taxable entity and no longer a "living trust" (the trust became irrevocable when your father passed).
As such, the trust will be required to file a Form 1041 if it had any taxable income for the tax year, gross income of $600 or more (regardless of taxable income), or a beneficiary who is a nonresident alien.
In order to prepare a 1041 for a trust, you will need to purchase a copy of TurboTax Business.
See https://turbotax.intuit.com/small-business-taxes/
Note: TurboTax Business must be installed and run in a Windows environment; it is not available as an online product nor will it run natively on a Mac. Further, you still need a TurboTax personal income tax preparation product since TurboTax Business is not capable of preparing individual income tax returns (it can only prepare returns for entities).
