If you need to file an estate income tax return (Form 1041), then you need TurboTax Business (link below).
https://turbotax.intuit.com/small-business-taxes/
Note that TurboTax Business can only be used to prepare income tax returns for entities, such as an estate, and cannot be used to prepare individual income tax returns (e.g., Form 1040). Further, TurboTax Business must be installed and run in a Windows environment; there is no online or Mac version.
Also note that if your mother had a very large estate (which is highly unlikely), an estate tax return (Form 706) would be required to be filed. There is no TurboTax product that supports Form 706.
See https://www.irs.gov/instructions/i706#idm140500555496240
